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Fiverr Pro
English
$
USD
I will fix react nextjs django and node bugs
Mian Zain
About this gig
Broken web app, API error, deployment issue, login bug, database problem, or frontend crash?
I will diagnose and fix bugs in your React, Next.js, Django, FastAPI, Node.js, REST API, database, authentication, or deployment setup.
I can fix:
- React component errors
- Next.js routing, API, SSR, hydration, and deployment issues
- Django bugs, views, models, serializers, admin, auth, and DRF APIs
- FastAPI routes, validation, async issues, and backend errors
- Node.js / Express API bugs
- Frontend and backend connection problems
- Login, signup, JWT, OAuth, and session issues
- PostgreSQL, MongoDB, Redis, and database query issues
- REST API and GraphQL bugs
- Stripe, email, file upload, and third-party API errors
- Vercel, Railway, Render, VPS, Docker, and cloud deployment issues
- Performance bottlenecks and broken features
What you get:
- Bug diagnosis
- Clean source-code fix
- Clear explanation of the issue
- Testing after the fix
- Setup or deployment guidance when needed
- Fast communication
Please message me before ordering. Send the error message, screenshots, repo details, logs, or a short explanation of the issue. I will review it and suggest the correct package or custom offer
Get to know Mian Zain
Mian Zain
Full Stack Developer
- FromPakistan
- Member sinceFeb 2024
- Avg. response time1 hour
Languages
English, Urdu, Spanish, French, German, Italian
I help founders turn SaaS, AI, and automation ideas into production-ready web apps.
I build with React, Next.js, Python, Django, FastAPI, Node.js, PostgreSQL, Redis, APIs, authentication, dashboards, payments, and OpenAI/Claude integrations.
My focus is simple: clean architecture, fast delivery, clear communication, and software that can survive real users, not just look good in a demo.
Best fit: AI SaaS MVPs, dashboards, backend APIs, automation platforms, marketplaces, admin panels, and startup web apps.
My Portfolio
Other Software Development Services I Offer
FAQ
Do I need to message before ordering?
Yes. Please message me first with the error, screenshots, logs, and tech stack. I will confirm the issue and suggest the correct package.
Can you fix bugs in an existing codebase?
Yes. I can work on existing React, Next.js, Django, FastAPI, Node.js, REST API, database, and deployment issues.
Can you fix deployment errors?
Yes. I can help with Vercel, Render, Railway, VPS, Docker, environment variables, build errors, and server configuration issues.
Can you fix authentication bugs?
Yes. I can fix login, signup, JWT, OAuth, session, permission, role-based access, and protected-route issues.
Can you fix frontend and backend connection problems?
Yes. I can debug API requests, CORS errors, broken endpoints, auth headers, response handling, and data flow between frontend and backend.
What access do you need?
Usually I need the relevant source code, error logs, screenshots, and project setup instructions. For deployment bugs, I may need access to the hosting dashboard through Fiverr-safe collaboration.
Will you explain what was wrong?
Yes. I will explain the root cause and what I changed so you understand the fix.
Do you provide source code?
Yes. For bug fixes, the updated code or patch is included unless the order is only for diagnosis.
