Caleb Mercer

Author

Caleb Mercer

Former lead product manager at a UK-based neobank who helped launch three connected banking integrations. Caleb now writes about PSD3 proposals, bank APIs, and how open finance is forcing legacy institutions to play nicely with startups. He lives in Berlin and insists on testing every budgeting API firsthand. CS degree from Imperial College London.

Caleb Mercer is an Open Banking and API Correspondent with a CS degree from Imperial College London. Formerly a lead product manager at a UK neobank, Caleb successfully launched three major banking integrations. Now based in Berlin, he provides expert analysis on PSD3 and open finance trends. By personally testing every budgeting API, Caleb offers clients a unique, hands-on perspective on how technology is revolutionizing the legacy-startup dynamic.

10Articles
Latest: June 11, 2026
Topics: Investing & Wealth, Income & Business, Taxes & Insurance, Real Estate & Housing

Articles by Caleb Mercer

10 articles

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