I've built complete full-stack products including an MPESA B2C bulk payments platform, a rental marketplace, and a dual-frontend e-commerce platform.
For the MPESA payments system, I integrated Safaricom's Daraja B2C API with OAuth2, real-time callbacks, reconciliation reporting, JWT-authenticated APIs, and audit trails.
I work across React, Python, Node.js, Express.js, SQL and NoSQL databases, Docker, AWS, and GitHub Actions to ship deployable end-to-end systems.

