POWER OF ATTORNEY

(For Executing Form ID and Forms 3, 4 and 5)

    Know all by these presents, that the undersigned hereby constitutes and appoints each of
Andrew Stephens, Paul Johnston and Gahee Lee of MongoDB, Inc. (the "Company") and
Nicole Brookshire, Jacqueline Marino and Robert Mackenzie of Davis Polk & Wardwell LLP
with full power of substitution, signing individually, the undersigned's true and lawful
attorneys-in fact and agents to:

    (1)    Prepare, execute in the undersigned's name and on the undersigned's behalf, and submit
to the Securities and Exchange Commission (the "SEC") Form ID and Forms 3, 4 and 5 (including
amendments thereto and joint filing agreements in connection therewith) in accordance with Section
16(a) of the Securities Exchange Act of 1934, as amended (the "Exchange Act") and the rules thereunder
in the undersigned's capacity as an officer, director or beneficial owner of more than 10% of a registered
class of securities of the Company;

    (2)    Do and perform any and all acts for and on behalf of the undersigned that may be
necessary or desirable to prepare and execute any such Form ID and Forms 3, 4 or 5 (including
amendments thereto and joint filing agreements in connection therewith) and timely file such forms with
the SEC and any stock exchange, self-regulatory association or any similar authority; and

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

    This Power of Attorney shall remain in full force and effect until the earliest to occur of (a)
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, (b) revocation
by the undersigned in a signed writing delivered to the Company and the foregoing attorneys-
in fact or (c) as to any attorney-in-fact individually, until such attorney-in-fact is no longer
employed by the Company, or any of its subsidiaries, or Davis Polk & Wardell LLP, as
applicable.

    IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed
as of the date written below.


Date: February 17, 2023


By:/s/ Thomas Bull
Thomas Bull