Full-Stack replit Bug Fix & Integration React / TypeScript / Node.js

We have a working full-stack app built with React / TypeScript on the frontend and a Node.js backend, and we need a focused developer to tackle a specific bug or integration issue. You won't be building from scratch — you'll be dropped into an existing codebase and expected to orient quickly, diagnose accurately, and fix cleanly. The task may involve Debugging runtime errors or unexpected behaviour in React components Fixing or wiring up a broken API integration (REST or third-party service) Resolving an authentication or session handling issue Sorting out a database query, schema mismatch, or connection problem Fixing a deployment or cloud config issue (Vercel, Railway, AWS, etc.) Writing a targeted test or QA check to confirm the fix holds You're a fit if you Read code you didn't write without needing a walkthrough Debug by reasoning, not just trial and error Communicate what you find — blockers, root cause, fix applied Deliver clean, minimal changes that solve the problem without breaking anything else