I will fix bugs and errors in your mern stack app

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Jahidul I.
fix bugs and errors in your mern stack app
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fix bugs and errors in your mern stack app

About this gig

Got a bug, error, or crash in your MERN stack application? I'll fix it fast and clean.


I'm a Software Engineer specialized in MERN stack (MongoDB, Express, React, Node.js). I find the root cause and fix it properly not just a quick patch.


What I can fix:

- React bugs (state, props, hooks, rendering)

- Node.js/Express server errors & crashes

- MongoDB connection & query issues

- API integration & authentication (JWT) issues

- Console, build & deployment errors

- CORS issues & slow performance


Why work with me:

- Clear explanation of what was wrong and how I fixed it

- Fast turnaround (24-48 hours for most bugs)

- Clean, reliable code

- Available for quick follow-up questions


Before ordering, please send:

1. Error screenshot/video

2. Code access (GitHub/ZIP/screen share)

3. Steps to reproduce


Not sure which package fits? Message me before ordering!

  • Programming language

    • TypeScript

  • Expertise

    • Algorithms & Data structures
    • Debugging
    • Performance
    • Security
    • Design

  • Frontend framework

    • jQuery
    • Next.js
    • React.js
    • Tailwind CSS
    • Vue.js

  • Backend framework

    • Express.js
    • NestJS
    • Next.js
    • Node.js

  • AI & low/no code builders

    • Cursor

Get to know Jahidul I.

Jahidul I.

Full Stack Software Engineer React Node NestJS DevOps Expert

  • FromBangladesh
  • Member sinceAug 2025
  • Avg. response time1 hour
  • Last delivery2 weeks

  • Languages

    Bengali, English, Spanish, German
Full Stack Developer with 6+ years of experience and a BSc in Software Engineering. I help businesses and startups build fast, scalable web and mobile applications they can rely on. Whether you need a React or Next.js frontend, a Node.js or NestJS backend, a React Native mobile app, or a fully deployed production server with Nginx, SSL, and CI/CD. I handle it end to end with clean architecture and smooth UX. I don't just write code. I make sure your product actually works in the real world optimized, secure, and ready to scale.

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