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I will fix bugs and errors in your react, next js, or mern stack application
Raja.fahad
About this gig
Stuck on a bug in your React, Next.js, or MERN stack application? I fix it fast, explain the root cause, and make sure it does not come back.
I am a Full-Stack Developer with 2+ years of production experience building CRM systems, POS platforms, and HMS real apps with real users. I do not guess at bugs. I diagnose them.
What I fix: React state management, hook errors, re-rendering issues Next.js routing errors, SSR hydration mismatches, API route failures Node.js & Express backend crashes, API errors, middleware bugs MongoDB connection errors, slow queries, aggregation failures JWT / Auth token issues, authentication errors, RBAC failures Socket.io connection drops, real-time sync failures Performance memory leaks, slow load times, unoptimized queries VPS / Nginx / PM2 deployment crashes, reverse proxy errors
My process:
- Reproduce the issue never fix blindly
- Trace root cause Chrome DevTools, React DevTools, server logs
- Apply a clean fix no workarounds that break something else
- Explain what happened so it does not come back
Why me: Production experience across CRM, POS, and HMS. Full-stack coverage frontend, backend, database, deployment. Fast replies. Root cause every time.
Respect third-party rights
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Get to know Raja.fahad
Raja.fahad
Full Stack Developer in NextJS, AI Chatbots, RAG and VPS Deployment
- FromPakistan
- Member sinceNov 2023
- Avg. response time1 hour
Languages
Urdu, English
Full-Stack Developer specializing in Next.js web apps, SaaS platforms, AI chatbots with RAG, and VPS deployment. I have 3+ years of experience building CRM, POS, and HMS systems for real businesses - 60% faster checkout, 40% faster dashboards, and private local AI (Ollama) running on live servers.
Stack: Next.js, React, Node.js, MongoDB, Nginx, PM2, Ollama, JWT, Socket.io
Services: Next.js/SaaS builds, AI chatbot integration, VPS deployment, bug fixing.
Need something built, AI-powered, deployed, or fixed? Let's talk.
My Portfolio
FAQ
What do you need from me to start?
Share your error message, a short description of what is broken, and access to your code (GitHub link or ZIP). If you do not have a GitHub repo, a ZIP of the relevant files works. The more context you give upfront, the faster I can fix it.
Can you fix both frontend and backend issues?
Yes — I am a full-stack developer. I fix React and Next.js frontend bugs, Node.js and Express backend errors, MongoDB query issues, and authentication (JWT) problems. If your bug lives anywhere in the MERN stack, I can find and fix it.
What if you cannot fix my bug?
Before I take any order, I review the issue description to confirm it is something I can solve. If I cannot fix it, I tell you before you pay — not after. I have never delivered a partial fix and called it done.
Do you provide the fixed code and an explanation?
Yes. You receive the corrected files via GitHub push or ZIP download, plus a clear written explanation of what the bug was, what caused it, and what I changed. You will understand the fix, not just have a fixed file.
Can you work on an existing codebase someone else wrote?
Yes. Most of my orders involve existing codebases — projects someone else started, tutorials that got extended, or applications that grew beyond their original structure. I read code quickly and do not need to have written it to debug it.
