Core banking backend for a microfinance bank: customer, account, loan, and transaction management APIs with RBAC, audit trails, and reporting.
For Confidence MFB, a Nigerian microfinance bank, I build and maintain the core banking backend end-to-end: customer, account, loan, and transaction management APIs on Node.js/NestJS and PostgreSQL. The platform enforces role-based access control, keeps append-only transaction audit trails, and powers the bank’s internal admin dashboard through reporting endpoints. Every code path touching customer financial data goes through security-focused review, with hardened authentication and input-validation flows.
Highlights
Customer, account, loan, and transaction management APIs
RBAC and transaction audit trails
Reporting endpoints powering the internal admin dashboard
Security-focused reviews on all financial-data code paths
Stack
- Node.js/NestJS
- PostgreSQL
- React/TypeScript (admin)
- RBAC
- Audit logging
