WILLIAM B ALLEN JR POA EXHIBIT 24


      Jacobs Engineering Group Inc /de/
      Power of Attorney
      for Executing Forms 3, 4 and 5

      Know all by these presents, that the undersigned, hereby constitutes
      and appoints each of Kevin Berryman, Michael Tyler and Justin Johnson,
      signing singly, the undersigned's true and lawful attorney-in-fact to:

      (1) execute for and on behalf of the undersigned, in the undersigned's
      capacity as an officer and/or director of Jacobs Engineering Group Inc
      /de/ (the "Company"), Forms 3, 4, and 5 in accordance with Section 16(a)
      of the Securities Exchange Act of 1934 and the rules thereunder; and
      any other forms or reports the undersigned may be required to file in
      connection with the undersigned's ownership, acquisition or disposition
      of securities of the Company;

      (2) do and perform any and all acts for and on behalf of the
      undersigned which may be necessary or desirable to complete, execute
      and file any such Form 3, 4 or 5, or other form or report, and timely
      file such form with the United States Securities and Exchange
      Commission and any stock exchange or similar authority; and

      (3) take any other action of any type whatsoever in connection with the
      foregoing which, in the opinion of such attorney-in-fact, may be of
      benefit to, in the best interest of, or legally required by, the
      undersigned, it being understood that the documents executed by such
      attorney-in-fact on behalf of the undersigned pursuant to this Power of
      Attorney shall be in such form and shall contain such information,
      terms and conditions as such attorney-in-fact may authorize or approve
      in such attorney-in-fact's discretion.

      The undersigned hereby grants to each such attorney-in-fact full power
      and authority to do and perform any and every act and thing whatsoever
      requisite, necessary, or proper to be done in the exercise of any of
      the rights and powers herein granted, as fully to all intents and
      purposes as the undersigned might or could do if personally present,
      with full power of substitution or revocation, hereby ratifying and
      confirming all that such attorney-in-fact, or such attorney-in-fact's
      substitute or substitutes, shall lawfully do or cause to be done by
      virtue of this power of attorney and the rights and powers herein
      granted.  The undersigned acknowledges that the foregoing attorneys-in-
      fact, in serving in such capacity at the request of the undersigned,
      are not assuming, nor is the Company assuming, any of the undersigned's
      responsibilities to comply with Section 16 of the Securities Exchange
      Act of 1934.

      This Power of Attorney shall remain in full force and effect until the
      undersigned is no longer required to file Forms 3, 4 and 5 with respect
      to the undersigned's holdings of and transactions in securities issued
      by the Company, unless earlier revoked by the undersigned in a
      signed writing delivered to the foregoing attorneys-in-fact.

      IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney
      to be executed as of November 14, 2019.

      /s/ William B. Allen, Jr.
      William B. Allen, Jr.