I've built and maintained backend systems for transaction monitoring, chargebacks, fraud analysis, and payment-event ingestion at Paysight using C# (.NET) and SQL Server.
At Optty, I developed TypeScript services and payment-provider integrations for a payment orchestration platform, maintained at least 80% test coverage across critical services, and established coding standards and architecture principles. Previously at Appzone, I led engineering for a high-availability payment switch and improved release efficiency through agile practices and CI/CD enhancements.
I've also re-architected Bitcoin infrastructure at Wallets Africa, built payment and pension-remittance systems at Cyberspace, and automated smart-card issuance workflows for Nigerian banks at Electronic Payplus.
