<?xml version="1.0" encoding="utf-8"?>
<!--XBRL document created with Toppan Merrill Bridge  11.2.0.5 -->
<!--Based on XBRL 2.1-->
<!--Created on: 3/4/2026 6:38:30 PM-->
<!--Modified on: 3/4/2026 6:38:30 PM-->
<xsd:schema targetNamespace="http://Sesaicorporation.com/20251231" attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:us-roles="http://fasb.org/us-roles/2025" xmlns:ref="http://www.xbrl.org/2006/ref" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xl="http://www.xbrl.org/2003/XLink" xmlns:stpr="http://xbrl.sec.gov/stpr/2025" xmlns:utr="http://www.xbrl.org/2009/utr" xmlns:us-gaap="http://fasb.org/us-gaap/2025" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:country="http://xbrl.sec.gov/country/2025" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:attributeFormDefault="unqualified" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:srt="http://fasb.org/srt/2025" xmlns:enum2="http://xbrl.org/2020/extensible-enumerations-2.0" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:deprecated="http://www.xbrl.org/2009/role/deprecated" xmlns:net="http://www.xbrl.org/2009/role/net" xmlns:ses="http://Sesaicorporation.com/20251231" xmlns:dei="http://xbrl.sec.gov/dei/2025" xmlns:dtr="http://www.xbrl.org/2009/dtr" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:ecd="http://xbrl.sec.gov/ecd/2025" xmlns:ecd-sub="http://xbrl.sec.gov/ecd-sub/2025" xmlns:cyd-af-sub="http://xbrl.sec.gov/cyd-af-sub/2025" xmlns:cyd="http://xbrl.sec.gov/cyd/2025">
  <xsd:annotation>
    <xsd:appinfo>
      <link:roleType roleURI="http://Sesaicorporation.com/role/StatementConsolidatedBalanceSheets" id="StatementConsolidatedBalanceSheets">
        <link:definition>995200100 - Statement - Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/StatementConsolidatedStatementsOfOperationsAndComprehensiveLoss" id="StatementConsolidatedStatementsOfOperationsAndComprehensiveLoss">
        <link:definition>995200200 - Statement - Consolidated Statements of Operations and Comprehensive Loss</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/StatementConsolidatedStatementsOfCashFlows" id="StatementConsolidatedStatementsOfCashFlows">
        <link:definition>995200400 - Statement - Consolidated Statements of Cash Flows</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesInventoriesTabularDisclosureDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesInventoriesTabularDisclosureDetails">
        <link:definition>99940208 - Disclosure - Summary of Significant Accounting Policies - Inventories - Tabular Disclosure (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesFairValueFinancialAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesFairValueFinancialAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails">
        <link:definition>99940210 - Disclosure - Summary of Significant Accounting Policies - Fair Value - Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesEarnOutSharesDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesEarnOutSharesDetails">
        <link:definition>99940220 - Disclosure - Summary of Significant Accounting Policies - Earn-Out Shares (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureAcquisitionsConsiderationDetails" id="DisclosureAcquisitionsConsiderationDetails">
        <link:definition>99940302 - Disclosure - Acquisitions - Consideration (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureAcquisitionsPurchasePriceAllocationDetails" id="DisclosureAcquisitionsPurchasePriceAllocationDetails">
        <link:definition>99940305 - Disclosure - Acquisitions - Purchase Price Allocation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosurePartnershipsCreditsToResearchAndDevelopmentDetails" id="DisclosurePartnershipsCreditsToResearchAndDevelopmentDetails">
        <link:definition>99940502 - Disclosure - Partnerships - Credits to Research and Development (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureCashAndCashEquivalentsDetails" id="DisclosureCashAndCashEquivalentsDetails">
        <link:definition>99940601 - Disclosure - Cash and Cash Equivalents (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureShortTermInvestmentsTabularDisclosureDetails" id="DisclosureShortTermInvestmentsTabularDisclosureDetails">
        <link:definition>99940702 - Disclosure - Short-Term Investments - Tabular Disclosure (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosurePropertyAndEquipmentNetTabularDisclosureDetails" id="DisclosurePropertyAndEquipmentNetTabularDisclosureDetails">
        <link:definition>99940801 - Disclosure - Property and Equipment, Net - Tabular Disclosure (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureGoodwillAndIntangibleAssetsNetCompositionDetails" id="DisclosureGoodwillAndIntangibleAssetsNetCompositionDetails">
        <link:definition>99940902 - Disclosure - Goodwill and Intangible Assets, Net - Composition (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureGoodwillAndIntangibleAssetsNetFutureAmortizationExpensesDetails" id="DisclosureGoodwillAndIntangibleAssetsNetFutureAmortizationExpensesDetails">
        <link:definition>99940904 - Disclosure - Goodwill and Intangible Assets, Net - Future Amortization Expenses (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureAccruedExpensesAndOtherCurrentLiabilitiesDetails" id="DisclosureAccruedExpensesAndOtherCurrentLiabilitiesDetails">
        <link:definition>99941001 - Disclosure - Accrued Expenses and Other Current Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureLeasesMaturityOfLeaseLiabilitiesUnderOperatingLeasesDetails" id="DisclosureLeasesMaturityOfLeaseLiabilitiesUnderOperatingLeasesDetails">
        <link:definition>99941305 - Disclosure - Leases - Maturity of Lease Liabilities under Operating Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureLeasesGrossDifferenceDetails" id="DisclosureLeasesGrossDifferenceDetails">
        <link:definition>99941306 - Disclosure - Leases - Gross Difference (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureStockholdersEquityCommonStockReconciliationDetails" id="DisclosureStockholdersEquityCommonStockReconciliationDetails">
        <link:definition>99941503 - Disclosure - Stockholders' Equity - Common Stock - Reconciliation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureIncomeTaxesDomesticAndForeignComponentsOfIncomeLossBeforeIncomeTaxesDetails" id="DisclosureIncomeTaxesDomesticAndForeignComponentsOfIncomeLossBeforeIncomeTaxesDetails">
        <link:definition>99941701 - Disclosure - Income Taxes - Domestic and Foreign Components of Income (Loss) before Income Taxes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureIncomeTaxesProvisionDetails" id="DisclosureIncomeTaxesProvisionDetails">
        <link:definition>99941702 - Disclosure - Income Taxes - Provision (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureIncomeTaxesTaxRateReconciliationAmountDetails" id="DisclosureIncomeTaxesTaxRateReconciliationAmountDetails">
        <link:definition>99941703 - Disclosure - Income Taxes - Tax Rate Reconciliation, Amount (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureIncomeTaxesTaxRateReconciliationPercentDetails" id="DisclosureIncomeTaxesTaxRateReconciliationPercentDetails">
        <link:definition>99941704 - Disclosure - Income Taxes - Tax Rate Reconciliation, Percent (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails" id="DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails">
        <link:definition>99941706 - Disclosure - Income Taxes - Deferred Tax Assets and Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureIncomeTaxesNetOperatingLossCarryforwardsDetails" id="DisclosureIncomeTaxesNetOperatingLossCarryforwardsDetails">
        <link:definition>99941708 - Disclosure - Income Taxes - Net Operating Loss Carryforwards (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureNetIncomeLossPerShareBasicAndDilutedLossPerShareDetails" id="DisclosureNetIncomeLossPerShareBasicAndDilutedLossPerShareDetails">
        <link:definition>99941801 - Disclosure - Net Income (Loss) Per Share - Basic and Diluted Loss Per Share (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSegmentAndGeographicInformationSignificantExpensesDetails" id="DisclosureSegmentAndGeographicInformationSignificantExpensesDetails">
        <link:definition>99941902 - Disclosure - Segment and Geographic Information - Significant Expenses (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DocumentDocumentAndEntityInformation" id="DocumentDocumentAndEntityInformation">
        <link:definition>995200090 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/StatementConsolidatedBalanceSheetsParenthetical" id="StatementConsolidatedBalanceSheetsParenthetical">
        <link:definition>995200105 - Statement - Consolidated Balance Sheets (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/StatementConsolidatedStatementsOfStockholdersEquity" id="StatementConsolidatedStatementsOfStockholdersEquity">
        <link:definition>995200300 - Statement - Consolidated Statements of Stockholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureStockBasedCompensationTables" id="DisclosureStockBasedCompensationTables">
        <link:definition>99931603 - Disclosure - Stock-Based Compensation (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesConcentrationsOfCreditRiskDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesConcentrationsOfCreditRiskDetails">
        <link:definition>99940209 - Disclosure - Summary of Significant Accounting Policies - Concentrations of Credit Risk (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPropertyAndEquipmentDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesPropertyAndEquipmentDetails">
        <link:definition>99940213 - Disclosure - Summary of Significant Accounting Policies - Property and Equipment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesIntangibleAssetsDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesIntangibleAssetsDetails">
        <link:definition>99940214 - Disclosure - Summary of Significant Accounting Policies - Intangible Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesCommonStockWarrantsDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesCommonStockWarrantsDetails">
        <link:definition>99940221 - Disclosure - Summary of Significant Accounting Policies - Common Stock Warrants (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesRecentlyAdoptedAccountingPronouncementsDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesRecentlyAdoptedAccountingPronouncementsDetails">
        <link:definition>99940222 - Disclosure - Summary of Significant Accounting Policies - Recently Adopted Accounting Pronouncements (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureAcquisitionsGeneralInformationDetails" id="DisclosureAcquisitionsGeneralInformationDetails">
        <link:definition>99940301 - Disclosure - Acquisitions - General Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureAcquisitionsContingentConsiderationDetails" id="DisclosureAcquisitionsContingentConsiderationDetails">
        <link:definition>99940303 - Disclosure - Acquisitions - Contingent Consideration (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureAcquisitionsGoodwillDetails" id="DisclosureAcquisitionsGoodwillDetails">
        <link:definition>99940304 - Disclosure - Acquisitions - Goodwill (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureAcquisitionsFairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationDetails" id="DisclosureAcquisitionsFairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationDetails">
        <link:definition>99940306 - Disclosure - Acquisitions - Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureAcquisitionsIntangibleAssetsAcquiredDetails" id="DisclosureAcquisitionsIntangibleAssetsAcquiredDetails">
        <link:definition>99940307 - Disclosure - Acquisitions - Intangible Assets Acquired (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureAcquisitionsAmountsRecognizedSinceAcquisitionDetails" id="DisclosureAcquisitionsAmountsRecognizedSinceAcquisitionDetails">
        <link:definition>99940308 - Disclosure - Acquisitions - Amounts Recognized Since Acquisition (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureRevenueDisaggregationDetails" id="DisclosureRevenueDisaggregationDetails">
        <link:definition>99940401 - Disclosure - Revenue - Disaggregation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureRevenuePerformanceObligationDetails" id="DisclosureRevenuePerformanceObligationDetails">
        <link:definition>99940402 - Disclosure - Revenue - Performance Obligation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureRevenuePerformanceObligationDefaultDetails" id="DisclosureRevenuePerformanceObligationDefaultDetails">
        <link:definition>40402 - Disclosure - Revenue - Performance Obligation Default (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosurePartnershipsGeneralInformationDetails" id="DisclosurePartnershipsGeneralInformationDetails">
        <link:definition>99940501 - Disclosure - Partnerships - General Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureShortTermInvestmentsGeneralInformationDetails" id="DisclosureShortTermInvestmentsGeneralInformationDetails">
        <link:definition>99940701 - Disclosure - Short-Term Investments - General Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureGovernmentGrantDetails" id="DisclosureGovernmentGrantDetails">
        <link:definition>99941101 - Disclosure - Government Grant (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSponsorEarnOutLiabilitiesKeyInputsDetails" id="DisclosureSponsorEarnOutLiabilitiesKeyInputsDetails">
        <link:definition>99941201 - Disclosure - Sponsor Earn-Out Liabilities - Key Inputs (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSponsorEarnOutLiabilitiesFairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationDetails" id="DisclosureSponsorEarnOutLiabilitiesFairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationDetails">
        <link:definition>99941202 - Disclosure - Sponsor Earn-Out Liabilities - Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureLeasesGeneralInformationDetails" id="DisclosureLeasesGeneralInformationDetails">
        <link:definition>99941301 - Disclosure - Leases - General Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureLeasesAdditionalInformationDetails" id="DisclosureLeasesAdditionalInformationDetails">
        <link:definition>99941307 - Disclosure - Leases - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureStockholdersEquityCommonStockGeneralInformationDetails" id="DisclosureStockholdersEquityCommonStockGeneralInformationDetails">
        <link:definition>99941501 - Disclosure - Stockholders' Equity - Common Stock - General Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureStockholdersEquityCommonStockAdditionalInformationDetails" id="DisclosureStockholdersEquityCommonStockAdditionalInformationDetails">
        <link:definition>99941502 - Disclosure - Stockholders' Equity - Common Stock - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureStockholdersEquityWarrantsDetails" id="DisclosureStockholdersEquityWarrantsDetails">
        <link:definition>99941505 - Disclosure - Stockholders' Equity - Warrants (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureStockholdersEquityCommonStockAvailableForFutureIssuanceDetails" id="DisclosureStockholdersEquityCommonStockAvailableForFutureIssuanceDetails">
        <link:definition>99941506 - Disclosure - Stockholders' Equity - Common Stock Available for Future Issuance (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureStockBasedCompensationGeneralInformationDetails" id="DisclosureStockBasedCompensationGeneralInformationDetails">
        <link:definition>99941601 - Disclosure - Stock-Based Compensation - General Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureStockBasedCompensationStockBasedCompensationExpenseStatementOfOperationsDetails" id="DisclosureStockBasedCompensationStockBasedCompensationExpenseStatementOfOperationsDetails">
        <link:definition>99941602 - Disclosure - Stock-Based Compensation - Stock-based Compensation Expense - Statement of Operations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureStockBasedCompensationStockBasedCompensationExpenseAwardTypeDetails" id="DisclosureStockBasedCompensationStockBasedCompensationExpenseAwardTypeDetails">
        <link:definition>99941603 - Disclosure - Stock-Based Compensation - Stock-based Compensation Expense - Award Type (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureStockBasedCompensationEquityInstrumentsOtherThanOptionsNonvestedActivityDetails" id="DisclosureStockBasedCompensationEquityInstrumentsOtherThanOptionsNonvestedActivityDetails">
        <link:definition>99941604 - Disclosure - Stock-Based Compensation - Equity Instruments Other than Options, Nonvested - Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureStockBasedCompensationValuationAssumptionsDetails" id="DisclosureStockBasedCompensationValuationAssumptionsDetails">
        <link:definition>99941605 - Disclosure - Stock-Based Compensation - Valuation Assumptions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureStockBasedCompensationEquityInstrumentsOtherThanOptionsNonvestedAdditionalInformationDetails" id="DisclosureStockBasedCompensationEquityInstrumentsOtherThanOptionsNonvestedAdditionalInformationDetails">
        <link:definition>99941606 - Disclosure - Stock-Based Compensation - Equity Instruments Other than Options, Nonvested - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureStockBasedCompensationUnrecognizedStockBasedCompensationCostDetails" id="DisclosureStockBasedCompensationUnrecognizedStockBasedCompensationCostDetails">
        <link:definition>99941609 - Disclosure - Stock-Based Compensation - Unrecognized Stock-based Compensation Cost (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureIncomeTaxesExaminationDetails" id="DisclosureIncomeTaxesExaminationDetails">
        <link:definition>99941705 - Disclosure - Income Taxes - Examination (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureIncomeTaxesTaxCreditCarryforwardsDetails" id="DisclosureIncomeTaxesTaxCreditCarryforwardsDetails">
        <link:definition>99941709 - Disclosure - Income Taxes - Tax Credit Carryforwards (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsGeneralInformationDetails" id="DisclosureIncomeTaxesUnrecognizedTaxBenefitsGeneralInformationDetails">
        <link:definition>99941710 - Disclosure - Income Taxes - Unrecognized Tax Benefits - General Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureNetIncomeLossPerSharePotentiallyDilutiveSecuritiesDetails" id="DisclosureNetIncomeLossPerSharePotentiallyDilutiveSecuritiesDetails">
        <link:definition>99941802 - Disclosure - Net Income (Loss) Per Share - Potentially Dilutive Securities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSegmentAndGeographicInformationSegmentInformationDetails" id="DisclosureSegmentAndGeographicInformationSegmentInformationDetails">
        <link:definition>99941901 - Disclosure - Segment and Geographic Information - Segment Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSegmentAndGeographicInformationGeographicAndConcentrationInformationDetails" id="DisclosureSegmentAndGeographicInformationGeographicAndConcentrationInformationDetails">
        <link:definition>99941903 - Disclosure - Segment and Geographic Information - Geographic and Concentration Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSegmentAndGeographicInformationLongLivedAssetsDetails" id="DisclosureSegmentAndGeographicInformationLongLivedAssetsDetails">
        <link:definition>99941904 - Disclosure - Segment and Geographic Information - Long-lived Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureRelatedPartyTransactionsDetails" id="DisclosureRelatedPartyTransactionsDetails">
        <link:definition>99942101 - Disclosure - Related-Party Transactions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureNatureOfBusiness" id="DisclosureNatureOfBusiness">
        <link:definition>995210101 - Disclosure - Nature of Business</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPolicies" id="DisclosureSummaryOfSignificantAccountingPolicies">
        <link:definition>995210201 - Disclosure - Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureAcquisitions" id="DisclosureAcquisitions">
        <link:definition>995210301 - Disclosure - Acquisitions</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureRevenue" id="DisclosureRevenue">
        <link:definition>995210401 - Disclosure - Revenue</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosurePartnerships" id="DisclosurePartnerships">
        <link:definition>995210501 - Disclosure - Partnerships</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureCashAndCashEquivalents" id="DisclosureCashAndCashEquivalents">
        <link:definition>995210601 - Disclosure - Cash and Cash Equivalents</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureShortTermInvestments" id="DisclosureShortTermInvestments">
        <link:definition>995210701 - Disclosure - Short-Term Investments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosurePropertyAndEquipmentNet" id="DisclosurePropertyAndEquipmentNet">
        <link:definition>995210801 - Disclosure - Property and Equipment, Net</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureGoodwillAndIntangibleAssetsNet" id="DisclosureGoodwillAndIntangibleAssetsNet">
        <link:definition>995210901 - Disclosure - Goodwill and Intangible Assets, Net</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureAccruedExpensesAndOtherCurrentLiabilities" id="DisclosureAccruedExpensesAndOtherCurrentLiabilities">
        <link:definition>995211001 - Disclosure - Accrued Expenses and Other Current Liabilities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureGovernmentGrant" id="DisclosureGovernmentGrant">
        <link:definition>995211101 - Disclosure - Government Grant</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSponsorEarnOutLiabilities" id="DisclosureSponsorEarnOutLiabilities">
        <link:definition>995211201 - Disclosure - Sponsor Earn-Out Liabilities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureLeases" id="DisclosureLeases">
        <link:definition>995211301 - Disclosure - Leases</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureCommitmentsAndContingencies" id="DisclosureCommitmentsAndContingencies">
        <link:definition>995211401 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureStockholdersEquity" id="DisclosureStockholdersEquity">
        <link:definition>995211501 - Disclosure - Stockholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureStockBasedCompensation" id="DisclosureStockBasedCompensation">
        <link:definition>995211601 - Disclosure - Stock-Based Compensation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureIncomeTaxes" id="DisclosureIncomeTaxes">
        <link:definition>995211701 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureNetIncomeLossPerShare" id="DisclosureNetIncomeLossPerShare">
        <link:definition>995211801 - Disclosure - Net Income (Loss) Per Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSegmentAndGeographicInformation" id="DisclosureSegmentAndGeographicInformation">
        <link:definition>995211901 - Disclosure - Segment and Geographic Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureDefinedContributionPlan" id="DisclosureDefinedContributionPlan">
        <link:definition>995212001 - Disclosure - Defined Contribution Plan</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureRelatedPartyTransactions" id="DisclosureRelatedPartyTransactions">
        <link:definition>995212101 - Disclosure - Related-Party Transactions</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies" id="DisclosureSummaryOfSignificantAccountingPoliciesPolicies">
        <link:definition>99920202 - Disclosure - Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesTables" id="DisclosureSummaryOfSignificantAccountingPoliciesTables">
        <link:definition>99930203 - Disclosure - Summary of Significant Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureAcquisitionsTables" id="DisclosureAcquisitionsTables">
        <link:definition>99930303 - Disclosure - Acquisitions (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureRevenueTables" id="DisclosureRevenueTables">
        <link:definition>99930403 - Disclosure - Revenue (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosurePartnershipsTables" id="DisclosurePartnershipsTables">
        <link:definition>99930503 - Disclosure - Partnerships (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureCashAndCashEquivalentsTables" id="DisclosureCashAndCashEquivalentsTables">
        <link:definition>99930603 - Disclosure - Cash and Cash Equivalents (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureShortTermInvestmentsTables" id="DisclosureShortTermInvestmentsTables">
        <link:definition>99930703 - Disclosure - Short-Term Investments (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosurePropertyAndEquipmentNetTables" id="DisclosurePropertyAndEquipmentNetTables">
        <link:definition>99930803 - Disclosure - Property and Equipment, Net (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureGoodwillAndIntangibleAssetsNetTables" id="DisclosureGoodwillAndIntangibleAssetsNetTables">
        <link:definition>99930903 - Disclosure - Goodwill and Intangible Assets, Net (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureAccruedExpensesAndOtherCurrentLiabilitiesTables" id="DisclosureAccruedExpensesAndOtherCurrentLiabilitiesTables">
        <link:definition>99931003 - Disclosure - Accrued Expenses and Other Current Liabilities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSponsorEarnOutLiabilitiesTables" id="DisclosureSponsorEarnOutLiabilitiesTables">
        <link:definition>99931203 - Disclosure - Sponsor Earn-Out Liabilities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureLeasesTables" id="DisclosureLeasesTables">
        <link:definition>99931303 - Disclosure - Leases (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureStockholdersEquityTables" id="DisclosureStockholdersEquityTables">
        <link:definition>99931503 - Disclosure - Stockholders' Equity (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureIncomeTaxesTables" id="DisclosureIncomeTaxesTables">
        <link:definition>99931703 - Disclosure - Income Taxes (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureNetIncomeLossPerShareTables" id="DisclosureNetIncomeLossPerShareTables">
        <link:definition>99931803 - Disclosure - Net Income (Loss) Per Share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSegmentAndGeographicInformationTables" id="DisclosureSegmentAndGeographicInformationTables">
        <link:definition>99931903 - Disclosure - Segment and Geographic Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesForeignCurrencyTranslationDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesForeignCurrencyTranslationDetails">
        <link:definition>99940201 - Disclosure - Summary of Significant Accounting Policies - Foreign Currency Translation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesRestrictedCashDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesRestrictedCashDetails">
        <link:definition>99940202 - Disclosure - Summary of Significant Accounting Policies - Restricted Cash (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesServiceRevenueDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesServiceRevenueDetails">
        <link:definition>99940203 - Disclosure - Summary of Significant Accounting Policies - Service Revenue (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesDeferredContractCostsDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesDeferredContractCostsDetails">
        <link:definition>99940204 - Disclosure - Summary of Significant Accounting Policies - Deferred Contract Costs (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesAccountsReceivableDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesAccountsReceivableDetails">
        <link:definition>99940205 - Disclosure - Summary of Significant Accounting Policies - Accounts Receivable (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesWarrantyReserveDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesWarrantyReserveDetails">
        <link:definition>99940206 - Disclosure - Summary of Significant Accounting Policies - Warranty Reserve (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesInventoriesGeneralInformationDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesInventoriesGeneralInformationDetails">
        <link:definition>99940207 - Disclosure - Summary of Significant Accounting Policies - Inventories - General Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesFairValueContingentConsiderationLiabilityDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesFairValueContingentConsiderationLiabilityDetails">
        <link:definition>99940211 - Disclosure - Summary of Significant Accounting Policies - Fair Value - Contingent Consideration Liability (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesFairValueTransfersDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesFairValueTransfersDetails">
        <link:definition>99940212 - Disclosure - Summary of Significant Accounting Policies - Fair Value - Transfers (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesImpairmentOfLongLivedAssetsDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesImpairmentOfLongLivedAssetsDetails">
        <link:definition>99940215 - Disclosure - Summary of Significant Accounting Policies - Impairment of Long-Lived Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesGoodwillDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesGoodwillDetails">
        <link:definition>99940216 - Disclosure - Summary of Significant Accounting Policies - Goodwill (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesNotesPayableDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesNotesPayableDetails">
        <link:definition>99940217 - Disclosure - Summary of Significant Accounting Policies - Notes Payable (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesLeasesDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesLeasesDetails">
        <link:definition>99940218 - Disclosure - Summary of Significant Accounting Policies - Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureSummaryOfSignificantAccountingPoliciesSponsorEarnOutLiabilitiesDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesSponsorEarnOutLiabilitiesDetails">
        <link:definition>99940219 - Disclosure - Summary of Significant Accounting Policies - Sponsor Earn-Out Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureRevenueContractAssetsDetails" id="DisclosureRevenueContractAssetsDetails">
        <link:definition>99940403 - Disclosure - Revenue - Contract Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureRevenueContractLiabilitiesDetails" id="DisclosureRevenueContractLiabilitiesDetails">
        <link:definition>99940404 - Disclosure - Revenue - Contract Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureShortTermInvestmentsEquitySecuritiesDetails" id="DisclosureShortTermInvestmentsEquitySecuritiesDetails">
        <link:definition>99940703 - Disclosure - Short-Term Investments - Equity Securities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosurePropertyAndEquipmentNetDepreciationExpenseDetails" id="DisclosurePropertyAndEquipmentNetDepreciationExpenseDetails">
        <link:definition>99940802 - Disclosure - Property and Equipment, Net - Depreciation Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureGoodwillAndIntangibleAssetsNetGoodwillDetails" id="DisclosureGoodwillAndIntangibleAssetsNetGoodwillDetails">
        <link:definition>99940901 - Disclosure - Goodwill and Intangible Assets, Net - Goodwill (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureGoodwillAndIntangibleAssetsNetAmortizationExpenseDetails" id="DisclosureGoodwillAndIntangibleAssetsNetAmortizationExpenseDetails">
        <link:definition>99940903 - Disclosure - Goodwill and Intangible Assets, Net - Amortization Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureLeasesOperatingLeaseCostDetails" id="DisclosureLeasesOperatingLeaseCostDetails">
        <link:definition>99941302 - Disclosure - Leases - Operating Lease Cost (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureLeasesSupplementalCashFlowInformationDetails" id="DisclosureLeasesSupplementalCashFlowInformationDetails">
        <link:definition>99941304 - Disclosure - Leases - Supplemental Cash Flow Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureCommitmentsAndContingenciesDetails" id="DisclosureCommitmentsAndContingenciesDetails">
        <link:definition>99941401 - Disclosure - Commitments and Contingencies (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureStockholdersEquityPreferredStockDetails" id="DisclosureStockholdersEquityPreferredStockDetails">
        <link:definition>99941504 - Disclosure - Stockholders' Equity - Preferred Stock (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureStockBasedCompensationStockOptionsActivityDetails" id="DisclosureStockBasedCompensationStockOptionsActivityDetails">
        <link:definition>99941607 - Disclosure - Stock-Based Compensation - Stock Options - Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureStockBasedCompensationStockOptionsAdditionalInformationDetails" id="DisclosureStockBasedCompensationStockOptionsAdditionalInformationDetails">
        <link:definition>99941608 - Disclosure - Stock-Based Compensation - Stock Options - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureIncomeTaxesValuationAllowanceDetails" id="DisclosureIncomeTaxesValuationAllowanceDetails">
        <link:definition>99941707 - Disclosure - Income Taxes - Valuation Allowance (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsRollForwardDetails" id="DisclosureIncomeTaxesUnrecognizedTaxBenefitsRollForwardDetails">
        <link:definition>99941711 - Disclosure - Income Taxes - Unrecognized Tax Benefits - Roll Forward (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureDefinedContributionPlanDetails" id="DisclosureDefinedContributionPlanDetails">
        <link:definition>99942001 - Disclosure - Defined Contribution Plan (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:linkbaseRef xlink:type="simple" xlink:href="ses-20251231_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="ses-20251231_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="ses-20251231_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="ses-20251231_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:roleType roleURI="http://Sesaicorporation.com/role/DisclosureStandardAndCustomAxisDomainDefaults" id="DisclosureStandardAndCustomAxisDomainDefaults">
        <link:definition>99900 - Disclosure - Standard And Custom Axis Domain Defaults</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:import namespace="https://xbrl.org/2023/calculation-1.1" schemaLocation="https://www.xbrl.org/2023/calculation-1.1.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/ecd/2025" schemaLocation="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/dei/2025" schemaLocation="https://xbrl.sec.gov/dei/2025/dei-2025.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/country/2025" schemaLocation="https://xbrl.sec.gov/country/2025/country-2025.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/stpr/2025" schemaLocation="https://xbrl.sec.gov/stpr/2025/stpr-2025.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <xsd:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <xsd:import namespace="http://fasb.org/us-gaap/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd" />
  <xsd:import namespace="http://fasb.org/srt/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd" />
  <xsd:import namespace="http://fasb.org/us-roles/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-roles-2025.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/ecd-sub/2025" schemaLocation="https://xbrl.sec.gov/ecd/2025/ecd-sub-2025.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/cyd/2025" schemaLocation="https://xbrl.sec.gov/cyd/2025/cyd-2025.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/cyd-af-sub/2025" schemaLocation="https://xbrl.sec.gov/cyd/2025/cyd-af-sub-2025.xsd" />
  <xsd:element name="ScheduleOfCashCashEquivalentsAndRestrictedCashTableTextBlock" id="ses_ScheduleOfCashCashEquivalentsAndRestrictedCashTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="LaboratoryMachineryAndEquipmentMember" id="ses_LaboratoryMachineryAndEquipmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="OfficeAndComputerEquipmentMember" id="ses_OfficeAndComputerEquipmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AccruedExpensesAndOtherCurrentLiabilities" id="ses_AccruedExpensesAndOtherCurrentLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesTableTextBlock" id="ses_ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EarnOutSharesEscrowedEarnOutSharesMember" id="ses_EarnOutSharesEscrowedEarnOutSharesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesMember" id="ses_EarnOutSharesSponsorEarnOutSharesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EarnOutSharesEarnOutRestrictedSharesMember" id="ses_EarnOutSharesEarnOutRestrictedSharesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="CommonStockSharesIssuedSharesSubjectToFutureVesting" id="ses_CommonStockSharesIssuedSharesSubjectToFutureVesting" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="CommonStockSharesIssuedExcludingSharesSubjectToFutureVesting" id="ses_CommonStockSharesIssuedExcludingSharesSubjectToFutureVesting" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="CommonStockSharesOutstandingExcludingSharesSubjectToFutureVesting" id="ses_CommonStockSharesOutstandingExcludingSharesSubjectToFutureVesting" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="CommonStockSharesOutstandingSharesSubjectToFutureVesting" id="ses_CommonStockSharesOutstandingSharesSubjectToFutureVesting" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="CommonStockWarrantsPublicWarrantsMember" id="ses_CommonStockWarrantsPublicWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="CommonStockWarrantsPrivateWarrantsMember" id="ses_CommonStockWarrantsPrivateWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SesAiCorporation2021PlanMember" id="ses_SesAiCorporation2021PlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="CommonStockVotingRightsVotesPerShare" id="ses_CommonStockVotingRightsVotesPerShare" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="CommonStockConversionBasisConversionRatio" id="ses_CommonStockConversionBasisConversionRatio" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="CommonStockConversionBasisBeneficialOwnershipPercentage" id="ses_CommonStockConversionBasisBeneficialOwnershipPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="CommonStockConversionBasisAffirmativeVotePercentageMinimum" id="ses_CommonStockConversionBasisAffirmativeVotePercentageMinimum" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="ForfeituresOfEarnOutRestrictedShares" id="ses_ForfeituresOfEarnOutRestrictedShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ClassOfWarrantOrRightDateFromWhichWarrantsOrRightsExercisablePeriodFollowingBusinessCombination" id="ses_ClassOfWarrantOrRightDateFromWhichWarrantsOrRightsExercisablePeriodFollowingBusinessCombination" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ClassOfWarrantOrRightExercisableEntityOptionMinimumSharePriceToExceed" id="ses_ClassOfWarrantOrRightExercisableEntityOptionMinimumSharePriceToExceed" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="ClassOfWarrantOrRightExercisableEntityOptionRedemptionPrice" id="ses_ClassOfWarrantOrRightExercisableEntityOptionRedemptionPrice" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="ClassOfWarrantOrRightExercisableEntityOptionRedemptionPriceMinimumSharePriceToExceed" id="ses_ClassOfWarrantOrRightExercisableEntityOptionRedemptionPriceMinimumSharePriceToExceed" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="ClassOfWarrantOrRightExercisableEntityOptionRedemptionPriceMinimumSharePriceToExceedTradingDays" id="ses_ClassOfWarrantOrRightExercisableEntityOptionRedemptionPriceMinimumSharePriceToExceedTradingDays" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="ClassOfWarrantOrRightExercisableEntityOptionRedemptionPriceMinimumSharePriceToExceedTradingDayPeriod" id="ses_ClassOfWarrantOrRightExercisableEntityOptionRedemptionPriceMinimumSharePriceToExceedTradingDayPeriod" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="ClassOfWarrantOrRightExercisableEntityOptionRedemptionPriceMinimumSharePriceToExceedNotificationPeriod" id="ses_ClassOfWarrantOrRightExercisableEntityOptionRedemptionPriceMinimumSharePriceToExceedNotificationPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ClassOfWarrantOrRightExercisableEntityOptionRedemptionPriceMinimumSharePriceToExceedNotificationPeriodEntityToRedeemIfNotExercised" id="ses_ClassOfWarrantOrRightExercisableEntityOptionRedemptionPriceMinimumSharePriceToExceedNotificationPeriodEntityToRedeemIfNotExercised" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="CommonStockCapitalSharesReservedForFutureIssuanceTableTextBlock" id="ses_CommonStockCapitalSharesReservedForFutureIssuanceTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="CommonStockIssuedAndOutstandingReconciliationTableTextBlock" id="ses_CommonStockIssuedAndOutstandingReconciliationTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ClassOfWarrantOrRightRedemptionEntityOptionSharePriceLowEndOfRange" id="ses_ClassOfWarrantOrRightRedemptionEntityOptionSharePriceLowEndOfRange" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="ClassOfWarrantOrRightRedemptionEntityOptionSharePriceHighEndOfRange" id="ses_ClassOfWarrantOrRightRedemptionEntityOptionSharePriceHighEndOfRange" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="CommonStockWarrantsMember" id="ses_CommonStockWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ClassOfWarrantOrRightRedemptionEntityOptionMinimumSharePriceToExceed" id="ses_ClassOfWarrantOrRightRedemptionEntityOptionMinimumSharePriceToExceed" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesSharesIssued" id="ses_EarnOutSharesSponsorEarnOutSharesSharesIssued" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesParOrStatedValuePerShare" id="ses_EarnOutSharesSponsorEarnOutSharesParOrStatedValuePerShare" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche1EquityPercentageOfTotalShares" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche1EquityPercentageOfTotalShares" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche2DerivativeLiabilityPercentageOfTotalShares" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche2DerivativeLiabilityPercentageOfTotalShares" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche3DerivativeLiabilityPercentageOfTotalShares" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche3DerivativeLiabilityPercentageOfTotalShares" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche4DerivativeLiabilityPercentageOfTotalShares" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche4DerivativeLiabilityPercentageOfTotalShares" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche5DerivativeLiabilityPercentageOfTotalShares" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche5DerivativeLiabilityPercentageOfTotalShares" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche1EquityTermFromClosing" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche1EquityTermFromClosing" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche2DerivativeLiabilityTermFromClosing" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche2DerivativeLiabilityTermFromClosing" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche3DerivativeLiabilityTermFromClosing" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche3DerivativeLiabilityTermFromClosing" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche4DerivativeLiabilityTermFromClosing" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche4DerivativeLiabilityTermFromClosing" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche5DerivativeLiabilityTermFromClosing" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche5DerivativeLiabilityTermFromClosing" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche2DerivativeLiabilityMinimumSharePriceToExceed" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche2DerivativeLiabilityMinimumSharePriceToExceed" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche3DerivativeLiabilityMinimumSharePriceToExceed" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche3DerivativeLiabilityMinimumSharePriceToExceed" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche4DerivativeLiabilityMinimumSharePriceToExceed" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche4DerivativeLiabilityMinimumSharePriceToExceed" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche5DerivativeLiabilityMinimumSharePriceToExceed" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche5DerivativeLiabilityMinimumSharePriceToExceed" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche2DerivativeLiabilityMinimumSharePriceToExceedTradingDays" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche2DerivativeLiabilityMinimumSharePriceToExceedTradingDays" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche3DerivativeLiabilityMinimumSharePriceToExceedTradingDays" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche3DerivativeLiabilityMinimumSharePriceToExceedTradingDays" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche4DerivativeLiabilityMinimumSharePriceToExceedTradingDays" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche4DerivativeLiabilityMinimumSharePriceToExceedTradingDays" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche5DerivativeLiabilityMinimumSharePriceToExceedTradingDays" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche5DerivativeLiabilityMinimumSharePriceToExceedTradingDays" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche2DerivativeLiabilityMinimumSharePriceToExceedTradingDayPeriod" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche2DerivativeLiabilityMinimumSharePriceToExceedTradingDayPeriod" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche3DerivativeLiabilityMinimumSharePriceToExceedTradingDayPeriod" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche3DerivativeLiabilityMinimumSharePriceToExceedTradingDayPeriod" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche4DerivativeLiabilityMinimumSharePriceToExceedTradingDayPeriod" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche4DerivativeLiabilityMinimumSharePriceToExceedTradingDayPeriod" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche5DerivativeLiabilityMinimumSharePriceToExceedTradingDayPeriod" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsTranche5DerivativeLiabilityMinimumSharePriceToExceedTradingDayPeriod" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsChangeOfControlSharesReleasedFromTransferRestrictionsMinimumSharePriceToExceed" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsChangeOfControlSharesReleasedFromTransferRestrictionsMinimumSharePriceToExceed" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsChangeOfControlSharesReleasedFromTransferRestrictionsProRataMaximumSharePriceNotToExceed" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsChangeOfControlSharesReleasedFromTransferRestrictionsProRataMaximumSharePriceNotToExceed" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesSponsorEarnOutSharesTransferRestrictionsChangeOfControlSharesReleasedFromTransferRestrictionsPercentageOfShares" id="ses_EarnOutSharesSponsorEarnOutSharesTransferRestrictionsChangeOfControlSharesReleasedFromTransferRestrictionsPercentageOfShares" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesTotalEarnOutSharesSharesIssued" id="ses_EarnOutSharesTotalEarnOutSharesSharesIssued" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesTotalEarnOutSharesEscrowedEarnOutSharesEarnOutSharesSharesIssued" id="ses_EarnOutSharesTotalEarnOutSharesEscrowedEarnOutSharesEarnOutSharesSharesIssued" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesTotalEarnOutSharesEarnOutRestrictedSharesSharesIssued" id="ses_EarnOutSharesTotalEarnOutSharesEarnOutRestrictedSharesSharesIssued" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesTotalEarnOutSharesEscrowedEarnOutSharesFounderEarnOutSharesSharesIssued" id="ses_EarnOutSharesTotalEarnOutSharesEscrowedEarnOutSharesFounderEarnOutSharesSharesIssued" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesTotalEarnOutSharesEscrowedEarnOutSharesVestingMinimumClosingSharePrice" id="ses_EarnOutSharesTotalEarnOutSharesEscrowedEarnOutSharesVestingMinimumClosingSharePrice" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesTotalEarnOutSharesEarnOutRestrictedSharesVestingChangeInControlMinimumSharePrice" id="ses_EarnOutSharesTotalEarnOutSharesEarnOutRestrictedSharesVestingChangeInControlMinimumSharePrice" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EarnOutSharesTotalEarnOutSharesEscrowedEarnOutSharesVestingMinimumClosingSharePricePeriodBeginsFollowingClosing" id="ses_EarnOutSharesTotalEarnOutSharesEscrowedEarnOutSharesVestingMinimumClosingSharePricePeriodBeginsFollowingClosing" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EarnOutSharesTotalEarnOutSharesEscrowedEarnOutSharesVestingMinimumClosingSharePricePeriodEndsFollowingClosing" id="ses_EarnOutSharesTotalEarnOutSharesEscrowedEarnOutSharesVestingMinimumClosingSharePricePeriodEndsFollowingClosing" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EarnOutSharesTotalEarnOutSharesEarnOutRestrictedSharesVestingChangeInControlMinimumSharePriceEarnOutPeriod" id="ses_EarnOutSharesTotalEarnOutSharesEarnOutRestrictedSharesVestingChangeInControlMinimumSharePriceEarnOutPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EarnOutSharesTotalEarnOutSharesEarnOutRestrictedSharesVestingChangeInControlSharesToVestImmediately" id="ses_EarnOutSharesTotalEarnOutSharesEarnOutRestrictedSharesVestingChangeInControlSharesToVestImmediately" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="SponsorEarnOutLiabilityPolicyTextBlock" id="ses_SponsorEarnOutLiabilityPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="WarrantsPolicyTextBlock" id="ses_WarrantsPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EarnOutSharesPolicyTextBlock" id="ses_EarnOutSharesPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="CommonStockCapitalSharesReservedForFutureIssuanceAutomaticAnnualIncreasesPeriodCommencing01January2022Term" id="ses_CommonStockCapitalSharesReservedForFutureIssuanceAutomaticAnnualIncreasesPeriodCommencing01January2022Term" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="CommonStockCapitalSharesReservedForFutureIssuanceAutomaticAnnualIncreasesPeriodCommencing01January2022PercentageOfTotalSharesOutstanding" id="ses_CommonStockCapitalSharesReservedForFutureIssuanceAutomaticAnnualIncreasesPeriodCommencing01January2022PercentageOfTotalSharesOutstanding" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="CommonStockCapitalSharesReservedForFutureIssuanceIncrease" id="ses_CommonStockCapitalSharesReservedForFutureIssuanceIncrease" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="CertainOperatingLeasesEscalatingRentalPaymentsLeasesWithOptionToExtendMember" id="ses_CertainOperatingLeasesEscalatingRentalPaymentsLeasesWithOptionToExtendMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="CertainOperatingLeasesEscalatingRentalPaymentsLeasesWithOptionsToTerminateLeaseAtCertainTimesWithinLeaseTermMember" id="ses_CertainOperatingLeasesEscalatingRentalPaymentsLeasesWithOptionsToTerminateLeaseAtCertainTimesWithinLeaseTermMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="JointDevelopmentAgreementsPeriod" id="ses_JointDevelopmentAgreementsPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="JointDevelopmentAgreementsResearchAndDevelopmentCredit" id="ses_JointDevelopmentAgreementsResearchAndDevelopmentCredit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="OperatingLossCarryforwardsNotSubjectToExpiration" id="ses_OperatingLossCarryforwardsNotSubjectToExpiration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DebtSecuritiesAvailableForSaleAccretionIncomeOperatingActivities" id="ses_DebtSecuritiesAvailableForSaleAccretionIncomeOperatingActivities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationChangeInDerivativeLiabilityPercent" id="ses_EffectiveIncomeTaxRateReconciliationChangeInDerivativeLiabilityPercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DeferredTaxAssetsLiabilitiesGross" id="ses_DeferredTaxAssetsLiabilitiesGross" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ScheduleOfShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsValuationAssumptionsTableTextBlock" id="ses_ScheduleOfShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsValuationAssumptionsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="JointDevelopmentAgreementsResearchAndDevelopmentCreditExcludingRelatedParties" id="ses_JointDevelopmentAgreementsResearchAndDevelopmentCreditExcludingRelatedParties" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="JointDevelopmentAgreementsResearchAndDevelopmentCreditRelatedParties" id="ses_JointDevelopmentAgreementsResearchAndDevelopmentCreditRelatedParties" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationTaxDeductionLimitationMillionDollarLimitationSection162MPercent" id="ses_EffectiveIncomeTaxRateReconciliationTaxDeductionLimitationMillionDollarLimitationSection162MPercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset" id="ses_DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="DeferredTaxAssetsOperatingLeaseLiability" id="ses_DeferredTaxAssetsOperatingLeaseLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DeferredTaxAssetsSection174" id="ses_DeferredTaxAssetsSection174" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="JingNealisMember" id="ses_JingNealisMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="KylePilkingtonMember" id="ses_KylePilkingtonMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="OperatingLossCarryforwardsSubjectToExpiration" id="ses_OperatingLossCarryforwardsSubjectToExpiration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DerivativeLiabilityPriceVolatilityWeightedAverageLowEndOfRangePercentage" id="ses_DerivativeLiabilityPriceVolatilityWeightedAverageLowEndOfRangePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DerivativeLiabilityPriceVolatilityWeightedAverageHighEndOfRangePercentage" id="ses_DerivativeLiabilityPriceVolatilityWeightedAverageHighEndOfRangePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="IncreaseDecreaseInRightOfUseAssets" id="ses_IncreaseDecreaseInRightOfUseAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="OriginalEquipmentManufacturingPartnersMember" id="ses_OriginalEquipmentManufacturingPartnersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AdjustmentToAdditionalPaidInCapitalRestrictedStockUnitVested" id="ses_AdjustmentToAdditionalPaidInCapitalRestrictedStockUnitVested" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ForfeituresOfEarnOutRestrictedSharesValue" id="ses_ForfeituresOfEarnOutRestrictedSharesValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="VendorProjectChargesCurrent" id="ses_VendorProjectChargesCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationDeferredAdjustmentsPercent" id="ses_EffectiveIncomeTaxRateReconciliationDeferredAdjustmentsPercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="SingleReportableSegmentMember" id="ses_SingleReportableSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="LabAndEquipmentExpense" id="ses_LabAndEquipmentExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="GovernmentAssistanceLiabilityExcludingAccruedInterestNoncurrent" id="ses_GovernmentAssistanceLiabilityExcludingAccruedInterestNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="CostsOfFacility" id="ses_CostsOfFacility" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="AccruedSoftwareServicesCurrent" id="ses_AccruedSoftwareServicesCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="BusinessCombinationDeferredLiabilityCurrent" id="ses_BusinessCombinationDeferredLiabilityCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="BusinessCombinationDeferredLiabilityNoncurrent" id="ses_BusinessCombinationDeferredLiabilityNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ShenzhenUzEnergyCoLtdMember" id="ses_ShenzhenUzEnergyCoLtdMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BusinessCombinationRecognizedLiabilityAssumedAccruedExpensesAndOtherCurrentLiability" id="ses_BusinessCombinationRecognizedLiabilityAssumedAccruedExpensesAndOtherCurrentLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="LiabilitiesFairValueDisclosureCurrent" id="ses_LiabilitiesFairValueDisclosureCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="LiabilitiesFairValueDisclosureNoncurrent" id="ses_LiabilitiesFairValueDisclosureNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="BusinessCombinationDeferredConsiderationPayableForAcquisition" id="ses_BusinessCombinationDeferredConsiderationPayableForAcquisition" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="CustomerOneMember" id="ses_CustomerOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="CustomerTwoMember" id="ses_CustomerTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="CustomerThreeMember" id="ses_CustomerThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BusinessCombinationAcquireeSIncomeLossBeforeIncomeTaxesSinceAcquisitionDateActual" id="ses_BusinessCombinationAcquireeSIncomeLossBeforeIncomeTaxesSinceAcquisitionDateActual" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ServiceRevenueContractsTermLowEndOfRange" id="ses_ServiceRevenueContractsTermLowEndOfRange" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ServiceRevenueContractsTermHighEndOfRange" id="ses_ServiceRevenueContractsTermHighEndOfRange" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="BusinessCombinationConsiderationTransferredPurchaseConsideration" id="ses_BusinessCombinationConsiderationTransferredPurchaseConsideration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="BusinessCombinationConsiderationTransferredCapitalContributionForWorkingCapitalRequirements" id="ses_BusinessCombinationConsiderationTransferredCapitalContributionForWorkingCapitalRequirements" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityForeignExchange" id="ses_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityForeignExchange" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ContractWithCustomerLiabilityAdditions" id="ses_ContractWithCustomerLiabilityAdditions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ContractWithCustomerLiabilityForeignExchange" id="ses_ContractWithCustomerLiabilityForeignExchange" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ContractWithCustomerAssetAdditions" id="ses_ContractWithCustomerAssetAdditions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationOperatingLossCarryforwardsForeignAmount" id="ses_EffectiveIncomeTaxRateReconciliationOperatingLossCarryforwardsForeignAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationDualConsolidatedLossElectionDeferredTaxAssetsForeignNotRecognizedAmount" id="ses_EffectiveIncomeTaxRateReconciliationDualConsolidatedLossElectionDeferredTaxAssetsForeignNotRecognizedAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationOperatingLossCarryforwardsForeignPercent" id="ses_EffectiveIncomeTaxRateReconciliationOperatingLossCarryforwardsForeignPercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationDualConsolidatedLossElectionDeferredTaxAssetsForeignNotRecognizedPercent" id="ses_EffectiveIncomeTaxRateReconciliationDualConsolidatedLossElectionDeferredTaxAssetsForeignNotRecognizedPercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="FormerRelatedPartyFullyDilutedVotingInterestPercentage" id="ses_FormerRelatedPartyFullyDilutedVotingInterestPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="ContractWithCustomerLiabilityRevenueRecognizedExcludingOpeningBalance" id="ses_ContractWithCustomerLiabilityRevenueRecognizedExcludingOpeningBalance" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
</xsd:schema>
