Exhibit 23.1

INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM’S CONSENT

We consent to the inclusion in this Registration Statement of Colonnade Acquisition Corp. on Amendment No. 1 to Form S-4 (File No. 333-251611) of our report dated July 6, 2020 (which includes an explanatory paragraph as to the Company’s ability to continue as going concern), with respect to our audit of the financial statements of Colonnade Acquisition Corp. as of June 30, 2020 and for the period from June 4, 2020 (inception) through June 30, 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

Houston, Texas

January 27, 2021