TemitayoAdeeyo
Every payment is a promise.
I build the systems that move money, and the trust that keeps it moving. Here I share what I've learned about engineering leadership, payment infrastructure, and designing financial products that millions of people rely on every day.
10+
Years building fintech
Millions
Of users impacted
Leader
Of engineering teams
50k+
Article reads
Recent writing
Essays on payments & leadership
Three Patterns That Keep Fintech Systems Honest
ACID transactions, debit-before-value, and a proper ledger. The three technical patterns every engineer building financial software must internalize, with the code, the failure cases, and the tests to prove them.
Managing Backward Compatibility in Financial APIs
Breaking APIs is easy. Building them to evolve gracefully is where it gets interesting. A multi-layered feature flag approach for changing payment systems under your customers' feet, without them ever noticing.
The Global Language of Business
You don't need to be a programmer to understand APIs. You need one good analogy. How the invisible connections between software systems became the most important business tool in African tech.
“The systems people trust are not the ones that never fail. They are the ones that fail honestly, recover quickly, and never lose track of the money.”