<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>doc1.txt
<DESCRIPTION>POWER OF ATTORNEY (PUBLIC): JAMES G. MACKEY POA
<TEXT>
LIMITED POWER OF ATTORNEY

Know all by these presents, that the undersigned hereby constitutes and
appoints each of Rajinder Singh, Leslie Lunak and Jacqueline Bravo, each
an officer of BankUnited, Inc. and BankUnited, N.A.(hereinafter, the Company)
each of them individually and with full power of substitution, 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 U.S. Securities and Exchange Commission (the SEC) a Form
ID, including amendments thereto, and any other documents necessary or
appropriate to obtain 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 or any rule or regulation of the SEC;

2. execute for and on behalf of the undersigned, in the undersigned's capacity
as an officer and/or director of BankUnited, Inc. (the Company), Forms 3, 4
and 5 in accordance with Section 16(a) of the Securities Exchange Act of 1934
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-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.

By execution of this Limited Power of Attorney, the undersigned agrees and
confirms that the actions provided for herein shall be deemed effective as of
October 27, 2025 (the Effective Date) and 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 Limited Power of Attorney
to be executed as of this day of October 27, 2025.

Signed by:

/s/ James G. Mackey
Name: James G. Mackey
</TEXT>
</DOCUMENT>
