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I will fix react, nodejs, and mern stack bugs fast
Bishwajit Paul
About this gig
IS YOUR MERN APP BROKEN? LET'S DEBUG AND FIX IT NOW!
Is a crashing Node.js server, broken React hook, or MongoDB error crashing your project? I specialize in root cause debugging and bug fixing for MongoDB, Express, React, and Node.js, with clean, permanent solutions, no temporary patches.
What I Fix
- React UI & state bugs (hooks, Context API)
- Node.js & Express API crashes
- JWT auth, login, and token issues
- MongoDB Atlas & Mongoose schema errors
- CORS & broken API integration
- Deployment fixes (Vercel, Render, Heroku)
Packages:
- Basic ($50): Fix 1 minor bug in React, Node.js, or MongoDB
- Standard ($120): Resolve multiple bugs, API errors, or midlevel issues
- Premium ($200+): Full debugging, optimization, and postdelivery support
Why Me?
- MERN stack specialist with SaaS, ecommerce, portfolio, and dashboard experience
- Fast communication & quick turnaround
- Free minor tweaks after delivery for stability
Message me before ordering with your error details or repo link. Let's get your MERN app running smoothly again!
Get to know Bishwajit Paul
Bishwajit Paul
Web Developer
- FromBangladesh
- Member sinceApr 2026
Languages
English
I’m a Full-Stack MERN Developer now focused on building real, production-ready web applications — not tutorials. I work mainly with JavaScript, React, Node.js, Express, MongoDB, and modern frontend tooling like Tailwind. Recently. I enjoy solving the hard parts — bugs that don’t show up in tutorials, edge cases around tokens, state sync, and backend-frontend consistency. Before development, I worked as a Graphic Designer, which helped me build products that are both functional and user-friendly. I’m now focused on growing as a professional developer, contributing to meaningful projects.
My Portfolio
FAQ
What kind of bugs do you fix?
I fix frontend and backend bugs in MERN stack applications, including React UI issues, API errors, authentication problems (JWT, login, tokens), MongoDB/Mongoose database issues, CORS errors, routing bugs, state management problems, and performance-related issues.
What types of apps do you support?
I work on MERN stack applications such as SaaS platforms, e-commerce systems, admin dashboards, blogs, portfolios, and custom web applications built with React, Node.js, Express.js, and MongoDB.
Do you offer post-fix support?
Yes. After delivering the fix, I provide support to make sure the issue is resolved properly, and your application remains stable. If something related to the fix needs adjustment, I’ll review it.
Can you add new features or improve existing code?
Yes. Along with fixing bugs, I can improve existing features, refactor messy code, optimize APIs, improve database queries, and implement new functionality if needed.
How fast can you deliver?
Delivery depends on the complexity of the issue. Minor bugs are usually resolved quickly, while deeper issues may require more debugging time. If your issue is urgent, message me first and I’ll review it.
Can you fix my app even if it’s partially broken or unfinished?
Yes. Whether your app is incomplete, unstable, or has multiple connected issues, I can review the codebase, identify root causes, and work on stabilizing it.
Can you fix urgent or critical issues?
Yes. If your application has urgent production issues like authentication failures, broken APIs, crashes, or deployment bugs, send me the details first so I can assess and prioritize it.
What do you need before starting?
Please send the error details, screenshots, expected behavior, and access to the relevant code (GitHub repository, files, or snippets). This helps me analyze the issue faster and provide the right solution.
Do you fix authentication and login issues (JWT, sessions, tokens)?
Yes. I handle JWT refresh loops, session handling, and token‑based login problems to restore secure authentication.
Can you debug deployment errors (Vercel, Render, Heroku, etc.)?
Absolutely, I fix deployment crashes, CORS issues, and server misconfigurations so your app runs smoothly online.
