Bug-Fix + Stabilize a Live Next.js + Expo + Supabase App — Start This Week

We need a hands-on senior developer to start immediately. Live pre-beta youth social platform. Next.js on Vercel + Expo/React Native (iOS + Android) + Supabase. Weeks from launch. QA team has a working bug backlog. We need someone to take items off the list, fix them, ship them, and leave the code cleaner than they found it. The work: Fix bugs from a live QA backlog. Verified issues across web, iOS, Android. Take from the top, ship the fix, verify, move on. Stabilize as you go. When you fix a bug, spot the pattern that caused it and clean it up so we stop re-introducing the same issues. We want fewer regressions, not just fewer bugs. Ship to prod with our review. Branch or staging first, then prod. Strong performance on this sprint can lead to an ongoing role. If you're the right fit and want it, there's runway here for a longer-term engagement — possibly full-time — through beta launch and beyond. Stack: Next.js on Vercel · Expo/React Native · Supabase (Postgres, Auth) · Twilio · SendGrid · OpenAI Do not apply if you: Plan to run automated scans and hand us a PDF Want to pitch a full refactor before touching a single bug Are a team of 5 subcontractors under one Upwork account Can't start this week Use AI to generate fixes without understanding what they do, testing them, or checking their impact on the rest of the codebase. We are currently dealing with the fallout of exactly this pattern — fixes that "work" in isolation and break something else. If you use AI as a tool, we expect you to actually verify what it produces before shipping. If you can't, don't apply. To apply, tell us: A specific project where you cleared a live bug backlog on Next.js + Expo + Supabase (real, recent) Budget for a 5-day sprint — we want visible progress against the backlog by end of week Your earliest start date (we need someone starting Monday or Tuesday at the latest) Scoped access under NDA. GitHub monorepo. Figma references for anything visual.