At Convey Africa, I delivered an embeddable bill payment system for external partners, with a NestJS and TypeScript backend and a React widget. I designed signed-URL partner integration and documented the verification and expiry process so partners could integrate without ongoing engineering support.
At Osusu Mobile, I diagnosed duplicate payment credits by tracing webhook deliveries through logs and correlation IDs, then introduced Redis-based idempotency and regression tests. I also built reconciliation and observability systems, and have used Groq's LLM API to add funnel diagnosis to TrackIt.
