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Fiverr Pro
English
$
USD
I will fix, debug, troubleshoot mern stack apps, develop restful apis
Abhijit Mondal
About this gig
Is your MERN stack app throwing errors, crashing in production, or delivering slow API responses? You're in the right place.
I specialize in full-stack MERN stack development, fixing bugs, debugging frontend and backend issues, and building clean, high-performance RESTful APIs that scale with your business.
Here's what you'll get:
- Bug fixes across your full MERN stack (MongoDB/PostgreSQL, Express.js, React.js, Node.js)
- RESTful API development with routing, validation & error handling
- Database query optimization & faster API response times
- Authentication fixes (JWT, session, cookie & OAuth issues)
- Deployment troubleshooting (Vercel, Render, Heroku, Netlify, Railway)
- Security hardening & vulnerability patching
Why 100+ clients trust my MERN stack service:
- Clean, commented code, not rushed patches
- Every fix is tested before delivery
- Clear communication at every step
- Revisions until you're fully satisfied
No more chasing bugs alone. Send me a message before placing your order. Let's find the fastest path to a working, optimized app.
Get to know Abhijit Mondal
Abhijit Mondal
Full Stack Developer, MERN, WordPress, WooCommerce, Divi Theme Expert
- FromBangladesh
- Member sinceNov 2018
- Last delivery4 years
Languages
Bengali, English, Hindi
Hello - Welcome to my Fiverr Profile! I'm Abhijit Mondal, a passionate Full-Stack Engineer/Developer with over four years of professional experience. I love coding and have established myself as a top-rated freelancer on Upwork and a Level One seller on Fiverr.
I hold a B.Sc. (Honours) degree in Computer Science and Engineering, which has equipped me with a solid foundation in my field. Combining my education with practical experience, I excel at tackling complex coding challenges and creating efficient and user-friendly web applications.
My Portfolio
FAQ
What details do you need to start working on my issue?
I need a clear description of the problem, access to your code (GitHub repo or ZIP file), and any relevant credentials if deployment issues need fixing.
How long will it take to fix my issue?
It depends on the complexity of the issue. Simple bugs can be fixed within a few hours, while more complex issues may take longer. I’ll provide an estimated timeframe after reviewing the problem.
Can you fix both frontend and backend issues?
Yes! I specialize in troubleshooting and fixing issues in the entire MERN stack—MongoDB, Express.js, React.js, and Node.js.
Do you develop RESTful APIs?
Yes! I can develop high-performance, secure, and scalable RESTful APIs tailored to your application’s needs.
Do you offer video explanations of the fixes?
Yes, if needed, I can provide a short video guide explaining what was fixed and how you can prevent similar issues in the future.
What if I need ongoing support?
I offer extended support upon request. Let’s discuss your needs, and I can provide a custom offer for continued assistance.
Do you optimize code performance as well?
Yes! I can optimize API response times, improve database queries, and enhance your app’s overall performance.
Will you ensure my app is secure?
Yes! I can fix authentication issues, improve security, and implement best practices to keep your app safe.
How do I get started?
Please contact me before placing an order so I can review your issue and ensure I can provide the best solution. Send me a message, and let’s discuss your requirements! 🚀
