M-Pesa Payment Gateway Integration

Overview: We are digitizing the payment flows for a large regional SACCO in Central Kenya. This project involves integrating our core platform with the M-Pesa C2B and B2C APIs to allow members to deposit and withdraw funds directly from their mobile wallets. This is a critical step in our mission to bring modern financial services to community-based organizations. Deliverables: - A robust Node.js middleware for handling M-Pesa Daraja API calls. - Secure webhook endpoints for real-time transaction confirmation. - A merchant-facing dashboard for tracking transaction status and reconciliations. - Detailed technical documentation and unit test coverage. - Deployment to an AWS-based staging environment. Tech Stack: - Node.js (TypeScript), Express.js, PostgreSQL, Redis, M-Pesa Daraja API. Team Structure: - 1 Lead Backend Engineer (Project Lead), 1 Junior Developer, 1 QA Specialist. - The client team will provide access to the sandbox and production credentials.