<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-12-05</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001848821</issuerCik>
        <issuerName>Global Technology Acquisition Corp. I</issuerName>
        <issuerTradingSymbol>GTAC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001876538</rptOwnerCik>
            <rptOwnerName>Global Technology Acquisition I Sponsor LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>19 WEST 24TH STREET, 10TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10010</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001876610</rptOwnerCik>
            <rptOwnerName>Global Technology Acquisition I Sponsor GP Ltd</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>19 WEST 24TH STREET, 10TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10010</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Class B Ordinary Shares</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2021-12-05</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>31250</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Ordinary Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>31250</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4880000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F3"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The Class B Ordinary Shares will automatically convert into shares of Class A Ordinary Shares at the time of our initial business combination or earlier at the option of the holders thereof, on a one-for-one basis, subject to adjustment.  The shares have no expiration date.</footnote>
        <footnote id="F2">This Form 4 reflects the automatic surrender to the Issuer of 31,250 of the Issuer's shares of Class B ordinary shares, for no consideration by the Reporting Person pursuant to contractual arrangements with the Issuer, triggered by the expiration of the option of the underwriter of the Issuer's initial public offering to purchase additional units.</footnote>
        <footnote id="F3">Global Technology Acquisition I Sponsor LP (&quot;Sponsor&quot;) is the record holder of the shares reported herein. The general partner of Sponsor is Global Technology Acquisition I Sponsor GP Ltd (&quot;GP&quot;), and GP has voting and investment discretion with respect to the ordinary shares held of record by Sponsor. GP is governed by a board of directors consisting of four managers: Arnau Porto, Fabrice Grinda, Glaudia Gast and Jeffrey Weinstein (the &quot;Directors&quot;) and the approval of a majority of the Directors is required to approve any action. Each of the Directors disclaims beneficial ownership of the securities held of record by Sponsor.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Global Technology Acquisition I Sponsor LP By: Global Technology Acquisition I Sponsor GP Ltd. Its: general partner By: /s/ Claudia Gast, Director</signatureName>
        <signatureDate>2021-12-07</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Global Technology Acquisition I Sponsor GP Ltd. By: /s/ Claudia Gast, Director</signatureName>
        <signatureDate>2021-12-07</signatureDate>
    </ownerSignature>
</ownershipDocument>
