Exhibit 23.1

Independent Registered Public Accounting Firm’s Consent

We consent to the inclusion in this Registration Statement of Ajax I (the “Company”) on Amendment No. 2 to Form S-1 (File No. 333-249411) of our report dated September 25, 2020, which includes an explanatory paragraph as to the Company’s ability to continue as a going concern, with respect to our audit of the financial statements of Ajax I as of September 16, 2020 and for the period from August 13, 2020 (inception) through September 16, 2020, which report appears in the Prospectus, which is part of this Registration Statement. We also consent to the reference to our Firm under the heading “Experts” in such Prospectus.

/s/ Marcum llp

Marcum llp

New York, NY

October 23, 2020