I will fix nodejs, express, mongodb, react and rest API bugs

S
sunil_8521
S
sunil_8521
Sunil
fix nodejs, express, mongodb, react and rest API bugs
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fix nodejs, express, mongodb, react and rest API bugs

About this gig

I specialize in debugging and fixing backend and frontend issues quickly while maintaining clean, scalable code.


I can help with:

  • Node.js & Express.js bugs
  • MongoDB & Mongoose issues
  • REST API development and debugging
  • React.js bugs and API integration
  • Authentication (JWT, OAuth)
  • CORS & middleware errors
  • Database connection issues
  • Async/Await & Promise bugs
  • File upload and API integration
  • Performance optimization
  • Deployment and server issues


Why choose me?

  • Fast bug diagnosis
  • Clean and maintainable fixes
  • Clear communication
  • Tested solutions
  • On-time delivery


Please contact me before placing an order so I can review the issue and recommend the right package.

  • Website type

    • E-Commerce store

  • Programming language

    • JavaScript
    • TypeScript
    • React
    • Tailwind CSS
    • Node.js

  • Website features

    • Forum
    • Social media
    • Analytics
    • Booking
    • Portfolio
    • Dashboard
    • Landing page
    • Blog
    • User Authentication
    • Admin Panel
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Get to know Sunil

Sunil

Full Stack and Gen AI Developer

  • FromIndia
  • Member sinceNov 2025
  • Avg. response time6 hours

  • Languages

    Hindi, English
I'm a Full Stack Developer with hands-on experience building production-ready web applications using React, Next.js, Node.js, TypeScript, PostgreSQL, and MongoDB. I've built multi-tenant SaaS platforms, AI-powered applications, secure REST APIs, and real-time systems. I enjoy solving complex backend and frontend problems, writing clean, maintainable code, and building scalable software that delivers real value to users and businesses.

My Portfolio

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