Writing
Thinking in public about payment systems, reliability engineering, and the craft of building software.
Medium
ernestyoyowah.medium.com
A successful API response doesn't mean money has moved. Behind every payment tap lies authentication, authorization, ledger commits, settlement, and reconciliation — a distributed system where every step must be correct and recoverable.
What frontend engineers building card payment flows actually need to know about PCI DSS, tokenization, and hosted checkout.
In Progress
How to design resilient transaction pipelines that handle failure gracefully — from idempotency keys to dead letter queues.
Building dashboards, alerts, and distributed tracing for payment infrastructure — what to measure and why it matters.
More on Medium: ernestyoyowah.medium.com · or reach out at ernestniiyoyowah@gmail.com