You will get a broken AI or vibe-coded app fixed, hardened, and shipped to production
Top Rated
Project details
You built something with Lovable, Bolt, v0, Cursor, or Replit. It works in demos. It breaks with real users. The code is fragile, API keys are exposed, there's no proper error handling, and you know it won't survive production.
That's exactly where I come in.
• I take AI-generated and vibe-coded apps and turn them into clean, secure, production-ready systems. No judgment on how it was built. Just a relentless focus on making it work properly.
• What I fix: exposed API keys and security vulnerabilities, missing error handling and retry logic, broken authentication flows, unoptimised database queries, no-cost controls on AI API calls, missing environment variable setup, deployment failures, and code that works once but breaks under load.
Stack I work in: Next.js, React, TypeScript, Node.js, PostgreSQL, Supabase, Auth0, Stripe, OpenAI API, Vercel, AWS.
I've shipped production AI systems including a platform (under NDA) processing 10,000+ daily listings and a legal document analyser live on Vercel. I know exactly what separates demo code from production code.
Best fit: founders who built with AI tools and need a senior developer to make it real before launch.
That's exactly where I come in.
• I take AI-generated and vibe-coded apps and turn them into clean, secure, production-ready systems. No judgment on how it was built. Just a relentless focus on making it work properly.
• What I fix: exposed API keys and security vulnerabilities, missing error handling and retry logic, broken authentication flows, unoptimised database queries, no-cost controls on AI API calls, missing environment variable setup, deployment failures, and code that works once but breaks under load.
Stack I work in: Next.js, React, TypeScript, Node.js, PostgreSQL, Supabase, Auth0, Stripe, OpenAI API, Vercel, AWS.
I've shipped production AI systems including a platform (under NDA) processing 10,000+ daily listings and a legal document analyser live on Vercel. I know exactly what separates demo code from production code.
Best fit: founders who built with AI tools and need a senior developer to make it real before launch.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$500
|
Standard
$1,000
|
Advanced
$2,000
|
|---|---|---|---|
| Delivery Time | 5 days | 10 days | 18 days |
Number of Revisions | 1 | 2 | 3 |
Bug Investigation | |||
Fix Documentation | |||
Detailed Code Comments |
Optional add-ons
You can add these on the next page.
Additional Revision
+$100Frequently asked questions
13 reviews
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CL
Chisung L.
Jan 29, 2026
Public Employer Job Board
Great communication. Good team player. With Abdul's expertise, sometimes we would recommend features or changes that we had not thought of. Insightful.
BW
Ben W.
Jan 4, 2026
Tile-Based Contact & Property Search with AI Integration
Working with Abdul was a great experience. Great communication and fast with progress.
CL
Chisung L.
Sep 8, 2025
Build SEO-Optimized Job Board with Next.js (Bullhorn API, JSON-LD Schema, Server-Side Rendering)
This is second project Abdul finished for us and he has already started third project for us. Needless to say we are quite satisfied with his work. Every time we release a new project, we have many developers apply for the project, we do conduct interviews for each project. Yet, we've gone back to Abdul for the third time. What's different about Abdul is his communication, despite our time zone difference and work our differences, he is always responsive and sets the expectation clear. He asks thoughtful questions. As he dives deeper into the project, he provides his insights and recommendations as well.
CL
Chisung L.
Jul 26, 2025
Expert Back-End Developer for Bullhorn API Integration (Serverless Middleware)
I had an urgent request that started on Friday and needed to finish by Monday afternoon. Meeting this strict deadline was top priority without comprising the work. Abdul delivered. Great communication. Now we are going to do few more project with him.
TA
Taimoor A.
Aug 12, 2024
Expert Needed for Electron application
Abdul Rehman did an outstanding job working on our Electron app. He was efficient, knowledgeable, and delivered high-quality work on time. Highly recommend him for any future projects!
About Abdul
Senior Full-Stack Product Engineer | AI SaaS & API Integrations
100%
Job Success
Gujranwala, Pakistan - 9:43 pm local time
Unlike developers who only implement isolated tickets, I can take ownership of the complete product: architecture, database design, frontend, backend, API integrations, payments, AI workflows, testing, deployment and handover.
🏆 Top Rated on Upwork
✅ 21 completed jobs
✅ $22K+ earned
✅ Production experience across SaaS, AI, e-commerce, healthcare and internal business systems
SELECTED RESULTS
• Led the migration of a complex e-commerce and referral platform from .NET to Next.js, improving the user experience by 50% while integrating Auth0, payment systems, referral workflows, Strapi and third-party services.
• Built AI-powered recruitment workflows for a SaaS platform, including resume tailoring, job processing, outreach automation and OpenAI integrations. The new workflows contributed to a reported 70% increase in sales.
• Developed an Electron application for a dental organization that connected internal systems, communication tools and operational workflows in one place, improving team productivity by approximately 50%.
• Led a Next.js performance overhaul that reduced page-loading times by 80%.
WHAT I CAN OWN
• Production SaaS development from specification to launch
• Existing SaaS modernization and technical rescue
• Next.js, React and TypeScript applications
• Node.js, FastAPI and PostgreSQL backend systems
• Complex API and third-party integrations
• Stripe subscriptions, payments and secure webhooks
• Multi-tenant applications, authentication and permissions
• AI-powered workflows using OpenAI, Anthropic and RAG
• Internal tools, dashboards and workflow automation
• Performance optimization and production debugging
• AWS, Vercel, Docker, CI/CD and Cloudflare deployment
HOW I WORK
For an existing product, I first understand the architecture, business workflow and current risks before recommending changes.
For a new product, I help define the smallest serious production release, structure the database and integrations, divide delivery into clear milestones and provide working software throughout the engagement.
You receive:
• Proactive written updates
• Clear technical decisions and trade-offs
• Clean, maintainable code
• Testing for business-critical workflows
• Client-owned repositories and service accounts
• Deployment documentation and structured handover
My strongest engagements are production SaaS products, platform modernization, complex integrations and business workflows where reliability matters as much as development speed.
Send me a short description of your product, its current stage and the result you need. I will tell you the safest first step and whether I am the right person for it.
Steps for completing your project
After purchasing the project, send requirements so Abdul can start the project.
Delivery time starts when Abdul receives requirements from you.
Abdul works on your project following the steps below.
Revisions may occur after the delivery date.
Codebase audit and issue report
I review your full codebase, identify all critical issues, and send you a prioritised written report within 24 hours of receiving access.
Security and stability fixes
API keys secured, environment variables set up properly, auth flows fixed, error handling and retry logic added throughout.