# Senior Full-Stack Engineer – Integration & Production Stabilisation

**URL:** https://www.upwork.com/jobs/~022023642842201724978
**Budget:** $500 fixed-price
**Bid Range:** High $500 | Avg $490.63 | Low $400
**Client:** UAE/Dubai, 5.0★, $4.5K spent, 15 jobs, 67% hire rate, Payment verified
**Proposals:** 15-20
**Connect Cost:** 17
**Posted:** Feb 17, 2026

## Cover Letter

I can start immediately and deliver a fully working, production-deployed platform within 24-48 hours.

I've done exactly this kind of work many times — inheriting near-complete builds and getting them across the finish line. My recent projects include stabilising AI-enabled platforms with Node.js/React/TypeScript stacks, PostgreSQL integration, and production deployment on PaaS platforms like Render, Vercel, and Railway.

Here's what I'll deliver:

DELIVERABLE — Production Stabilisation Sprint:

Phase 1 — Architecture Audit (2-3 hours):
• Full codebase review and dependency audit
• Map all database → backend → frontend data flows
• Validate environment variables and API key configurations
• Document current state and identify all breaking points

Phase 2 — Integration & Debugging (6-10 hours):
• Connect PostgreSQL ↔ backend ↔ frontend cleanly
• Fix routing, authentication, and state management issues
• Validate and repair all API integrations
• Ensure end-to-end workflow functionality:
  - Task creation and persistence
  - Calendar management
  - Daily briefing generation
  - Document retrieval
  - Multi-project workload handling

Phase 3 — Production Deployment & Handoff (2-3 hours):
• Stabilise Render deployment with proper build/start scripts
• Clean up GitHub repository (remove dead code, organise structure)
• Updated README with deployment notes and architecture summary
• List of any known limitations or recommended next steps

Total: 12-16 focused hours → fully working deployed platform.

I'm available for live collaboration throughout and can communicate on your schedule (I work US Eastern time but am flexible for urgent sprints).

Portfolio: https://portfolio.mcpengage.com

## Screening Questions
(None visible on this posting)

## Notes
- Client avg hourly rate paid is $10/hr — but this is fixed-price so less relevant
- Good reviews from freelancers — "pleasure to work with", "communicates clearly"
- This is a repost of ~022023636271824508978 which already closed
- Bid at $500 (match high end, match the posted budget)