POWER OF ATTORNEY


With respect to holdings of and transactions in securities issued by
BigCommerce Holdings, Inc. (the "Company"), the undersigned hereby
constitutes and appoints the individuals named on Schedule A attached
hereto and as may be amended from time to time, or any of them signing
singly, with full power of substitution and resubstitution, to act as the
undersigned's true and lawful attorney-in-fact to:

1. prepare, execute in the undersigned's name and on the undersigned's
behalf, and submit to the United States Securities and Exchange
Commission (the "SEC") a Form ID, including amendments thereto, and any
other documents necessary or appropriate to obtain and/or regenerate
codes and passwords enabling the undersigned to make electronic filings
with the SEC of reports required by Section 16(a) of the Securities
Exchange Act of 1934, as amended, or any rule or regulation of the SEC;

2. execute for and on behalf of the undersigned, Forms 3, 4, and 5 in
accordance with Section 16 of the Securities Exchange Act of 1934, as
amended, and the rules thereunder;

3. do and perform any and all acts for and on behalf of the undersigned
which may be necessary or desirable to complete and execute any such Form
3, 4, or 5, complete and execute any amendment or amendments thereto, and
timely file such form with the SEC and any stock exchange or similar
authority; and

4. 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 terms and
conditions as such attorney-in? fact may approve in such attorney-in-
facts 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 and resubstitution or revocation, hereby ratifying and
confirming all that such attorney-in-fact, or such attorneys-in-fact
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 any Company assuming, any of the undersigned's
responsibilities to comply with Section 16 of the Securities Exchange Act
of 1934, as amended.

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 this 28th day July of 2022.

By: /s/ Sarah Gilligan
Name: Sarah Gilligan



SCHEDULE A

Individuals Appointed as Attorney-in-Fact with Full Power of Substitution
and Resubstitution


1. Robert Alvarez
2. Jeff Mengoli
3. Justin Bowes