Exhibit 3.1

AMENDED AND RESTATED CERTIFICATE OF INCORPORATION

OF

PARSONS CORPORATION

Parsons Corporation, a corporation organized and existing under and by virtue of the provisions of the General Corporation Law of the State of Delaware (the “DGCL”),

DOES HEREBY CERTIFY:

1. That the name of this corporation is Parsons Corporation, and that this corporation was originally incorporated pursuant to the DGCL on March 6, 1978 under the name The Parsons Corporation.

2. That the Board of Directors duly adopted resolutions proposing to amend and restate the Certificate of Incorporation of this corporation, declaring said amendment and restatement to be advisable and in the best interest of this corporation and its stockholders, and authorizing the appropriate officers of this corporation to solicit the consent of the stockholders therefor, which resolution setting forth the proposed amendment and restatement is as follows:

FIRST: The name of the Corporation is Parsons Corporation (the “Corporation”).

SECOND: The address of the Corporation’s registered office in the State of Delaware is 1209 Orange Street, Wilmington, County of New Castle, Delaware, 19801, and the name of its registered agent at such address is The Corporation Trust Company.

THIRD: The purpose of the Corporation is to engage in any lawful act or activity for which corporations may be organized under the DGCL, as it now exists or may hereafter be amended and supplemented.

FOURTH: The Corporation is authorized to issue two classes of stock to be designated, respectively, “Common Stock” and “Preferred Stock.” The total number of shares of capital stock which the Corporation shall have authority to issue is 1,100,000,000. The total number of shares of Common Stock that the Corporation is authorized to issue is 1,000,000,000, having a par value of $1.00 per share, and the total number of shares of Preferred Stock that the corporation is authorized to issue is 100,000,000, having a par value of $1.00 per share.

FIFTH: The designations and the powers, privileges and rights, and the qualifications, limitations or restrictions thereof in respect of each class of capital stock of the Corporation are as follows:

A. COMMON STOCK.

1. General. The voting, dividend, liquidation, conversion and stock split rights of the holders of the Common Stock are subject to and qualified by the rights of the holders of the Preferred Stock of any series as may be designated by the Board of Directors of the Corporation (the “Board of Directors”) upon any issuance of the Preferred Stock of any series.

2. Voting. Each holder of Common Stock shall be entitled to one (1) vote for each share of Common Stock held by such holder. Each holder of Common Stock shall be entitled to notice of any stockholders’ meeting in accordance with the Bylaws of the Corporation (as in effect at the time in question) (the “Bylaws”) and applicable law on all matters put to a vote of the stockholders of the Corporation.

The number of authorized shares of Common Stock may be increased or decreased (but not below the number of shares thereof then outstanding) by the affirmative vote of the holders of a majority of the stock of the Corporation entitled to vote, irrespective of the provisions of Section 242(b)(2) of the DGCL.

3. Dividends. Subject to the rights of any holders of any shares of Preferred Stock which may from time to time come into existence and be outstanding, the holders of Common Stock shall be entitled to the payment of dividends when and as declared by the Board of Directors in accordance with applicable law and to receive other distributions from the Corporation. Any dividends declared by the Board of Directors to the holders of the then outstanding Common Stock shall be paid to the holders thereof pro rata in accordance with the number of shares of Common Stock held by each such holder as of the record date of such dividend.

4. Liquidation. Subject to the rights of any holders of any shares of Preferred Stock which may from time to time come into existence and be outstanding, in the event of any liquidation, dissolution or winding up of the Corporation, whether voluntary or involuntary, the funds and assets of the Corporation that may be legally distributed to the Corporation’s stockholders shall be distributed among the holders of the then outstanding Common Stock pro rata in accordance with the number of shares of Common Stock held by each such holder.

B. PREFERRED STOCK

Preferred Stock may be issued from time to time in one or more series, each of such series to have such terms as stated or expressed herein and in the resolution or resolutions providing for the issue of such series adopted by the Board of Directors as hereinafter provided.

Authority is hereby expressly granted to the Board of Directors from time to time to issue the Preferred Stock in one or more series, and in connection with the creation of any such series, by adopting a resolution or resolutions providing for the issuance of the shares thereof and by filing a certificate of designations relating thereto in accordance with the DGCL, to determine and fix the number of shares of such series and such voting powers, full or limited, or no voting powers, and such designations, preferences and relative participating, optional or other special rights, and qualifications, limitations or restrictions thereof, including without limitation thereof, dividend rights, conversion rights, redemption privileges and liquidation preferences, as shall be stated and expressed in such resolutions, all to the fullest extent now or hereafter permitted by the DGCL. Without limiting the generality of the foregoing, the resolution or resolutions providing for the issuance of any series of Preferred Stock may provide that such series shall be superior or rank equally or be junior to any other series of Preferred Stock to the extent permitted by law.

The number of authorized shares of Preferred Stock may be increased or decreased (but not below the number of shares thereof then outstanding) by the affirmative vote of the holders of a majority of the stock of the Corporation entitled to vote, irrespective of the provisions of Section 242(b)(2) of the DGCL.

SIXTH: Subject to the rights of the holders of any series of Preferred Stock then outstanding, for as long as this Amended and Restated Certificate of Incorporation provides for a classified Board of Directors, any director, or the entire Board of Directors, may be removed only for cause, at a meeting called for that purpose.

SEVENTH: The Board of Directors shall be and is divided into three classes, Class I, Class II and Class III. The number of directors in each class shall be the whole number contained in the quotient arrived at by dividing the authorized number of directors by three, and if a fraction is also contained in such quotient, then if such fraction is one-third, the extra director shall be a member of Class I, and if such fraction is two-thirds, one of the extra Directors shall be a member of Class I and the other shall be a member of Class II. Each director shall serve for a term ending on the date of the third annual meeting following the annual meeting at which such director was elected; provided, however, that the directors first elected to Class I shall serve for a term ending on the date of the annual meeting next following the end of the calendar year 2019, the directors first elected to Class II shall serve for a term ending on the date of the second annual meeting next following the end of the calendar year 2019, and the directors first elected to Class III shall serve for a term ending on the date of the third annual meeting next following the end of the calendar year 2019. Notwithstanding the foregoing formula provisions, in the event that, as a result of any change in the authorized number of directors, the number of directors in any class would differ from the number allocated to that class under the formula provided in this Article Seventh immediately prior to such change, the following rules shall govern:

(a) each director then serving as such shall nevertheless continue as a director of the class of which he or she is a member until the expiration of his or her current term, or his or her prior death, resignation or removal; and

(b) in the event of any increase or decrease in the authorized number of directors, the newly created or eliminated directorships resulting from such increase or decrease shall be apportioned by the Board of Directors to such class or classes as shall, so far as possible, cause the classes to be equal in number; provided, that if after any change in the number of directors there results in a number of directors not divisible evenly by three, thus requiring classes with different numbers of directors, the designations of directorships shall be affected so that (i) in the case only one class is required to have one less director, the class whose term of office is due to expire next following such designation shall contain one less director than the other classes and (ii) in the case two classes are required to have one less director, the classes whose terms of office are due to expire next following such designation shall each contain one less director than the other class.

Notwithstanding any of the foregoing provisions of this Article Seventh, each director shall serve until his or her successor is elected and qualified or until his or her death, resignation or removal.

EIGHTH: Elections of directors at an annual or special meeting of stockholders need not be by written ballot unless the Bylaws of the Corporation shall so provide.

NINTH: No action shall be taken by the stockholders except at an annual or special meeting of stockholders.

TENTH: Special meetings of the stockholders of the Corporation for any purpose or purposes may be called at any time by the Board of Directors or by a committee of the Board of Directors which has been duly designated by the Board of Directors and whose powers and authority, as provided in a resolution of the Board of Directors or in the Bylaws of the Corporation, include the power to call such meetings, but such special meetings may not be called by any other person or persons.

ELEVENTH: The personal liability of the directors of the Corporation, to the Corporation or its stockholders for monetary damages for breach of his or her fiduciary duty as director, is hereby eliminated to the fullest extent permitted by the DGCL, as the same may be amended and supplemented. Any amendment, repeal or modification of this Article Eleventh, or the adoption of any provision of the Amended and Restated Certificate of Incorporation inconsistent with this Article Eleventh, shall not adversely affect any right or protection of a director of the Corporation existing immediately prior to such amendment, repeal or modification. If the DGCL is amended after approval by the stockholders of this Article Eleventh to authorize corporate action further eliminating or limiting the personal liability of directors, then the liability of a director of the Corporation shall be eliminated or limited to the fullest extent permitted by the DGCL as so amended.

TWELFTH: The Corporation shall, through the Bylaws or otherwise, to the fullest extent permitted by the DGCL, as the same exists or may hereafter be amended and supplemented, indemnify, advance expenses and hold harmless any person who was or is a director or officer of the Corporation or its subsidiaries. The Corporation may, by action of the Board of Directors, provide rights to indemnification and to advancement of expenses to such other employees or agents of the Corporation or its subsidiaries to such extent and to such effect as the Board of Directors shall determine to be appropriate and authorized by the DGCL. Any amendment, repeal or modification of this Article Twelfth shall not adversely affect any rights or protection existing hereunder immediately prior to such repeal or modification.

THIRTEENTH: The Court of Chancery of the State of Delaware shall be the sole and exclusive forum for (i) any derivative action or proceeding brought on behalf of the Corporation, (ii) any action asserting a claim of breach of a fiduciary duty owed by any director, officer, employee or agent of the Corporation to the Corporation or the Corporation’s stockholders, (iii) any action asserting a claim against the Corporation arising pursuant to any provision of the DGCL or this Amended and Restated Certificate of Incorporation or the Bylaws, or (iv) any action asserting a claim against the Corporation governed by the internal affairs doctrine, in each such case subject to said Court of Chancery having personal jurisdiction over the indispensable parties named as defendants therein, unless the Corporation provides written consent to the selection of an alternative forum. Any person or entity purchasing or otherwise acquiring any interest in shares of capital stock of the Corporation shall be deemed to have notice of and consented to the provisions of this Article Thirteenth.

FOURTEENTH: From time to time any of the provisions of this Amended and Restated Certificate of Incorporation may be amended, altered, changed or repealed, and other provisions authorized by the laws of the State of Delaware at the time in force may be added or inserted in the manner and at the time prescribed by said laws, and all rights at any time conferred upon the stockholders of the Corporation by this Amended and Restated Certificate of Incorporation are granted subject to the provisions of this Article Fourteenth.

FIFTEENTH: In furtherance and not in limitation of the rights, powers, privileges and discretionary authority granted or conferred by the DGCL or other statutes or laws of the State of Delaware, the Board of Directors is expressly authorized to make, alter, amend or repeal the Bylaws, without any action on the part of the stockholders, but the stockholders may make additional Bylaws and may alter, amend or repeal any Bylaw whether adopted by them or otherwise. The Corporation may in its Bylaws confer powers upon its Board of Directors in addition to the foregoing and in addition to the powers and authorities expressly conferred upon the Board of Directors by applicable law.

This Amended and Restated Certificate of Incorporation, which restates, integrates and further amends the provisions of the Corporation’s Certificate of Incorporation, has been duly adopted in accordance with Sections 228, 242 and 245 of the DGCL.

[Signature Page to Follow.]

IN WITNESS WHEREOF, the Corporation has executed this Amended and Restated Certificate of Incorporation on this 10th day of May, 2019.

/s/ Charles L. Harrington

Name:  Charles L. Harrington

Title:   Chairman, Chief Executive Officer and President

[Signature Page to Amended and Restated Certificate of Incorporation]