Archive project · backend
Auth & Protected APIs
Full authentication system with JWT, refresh token rotation, session management, role-based access control, and protected API routes.
- Node.js
- JWT
- Sessions
- MongoDB
- PostgreSQL
The Problem
SaaS and product backends needed solid auth with refresh rotation, sessions, and RBAC without reinventing the pattern each time.
Weak token handling and missing role checks were recurring audit findings on greenfield APIs.
Tech Stack & Architecture
Node.js authentication layer with JWT, refresh token rotation, session handling, and role-based access control over MongoDB or PostgreSQL.
Protected routes assume untrusted clients and enforce authorization after authentication.
Key Results / Business Outcome
Implemented a reusable auth and protected-API pattern suitable for production SaaS and product backends.
New services inherit rotation and RBAC instead of shipping with long-lived static tokens.