Comprehensive App Backend Development

I need a production-ready backend that covers three core pillars: user authentication and management, robust database handling, and versatile API connectivity. The data layer must run on PostgreSQL, so your solution should take advantage of its relational strengths, indexing, and security features. Authentication should support registration, secure login (JWT or similar), password recovery, and role-based access. The system must scale easily as new user types are added. On the integration side, I will connect to both internal endpoints and external third-party services, plus at least one payment gateway. Clean REST (or GraphQL if you prefer) documentation is essential so the mobile team can consume endpoints without friction. While I am open to frameworks—[login to view URL], NestJS, Django, FastAPI, or another proven stack—the codebase has to be well-structured, fully commented, and delivered via Git. Deliverables • Source code with README and environment setup • PostgreSQL schema/migrations • Auth flow with testing credentials • Documented API collection (Postman/Swagger) • Brief hand-over call or video walk-through Acceptance criteria • All endpoints return expected responses and error handling • Unit tests cover critical auth and payment paths • Deployment script (Docker or similar) runs end-to-end on my VPS If this aligns with your expertise, let’s talk timing and milestones so we can get the backend live quickly.

Project ID: 40566351