I will fix bugs, errors and API issues in react, node js and mern app


About this gig
Are you facing critical bugs, console errors, or unexpected crashes in your React, Node.js, or MERN web app?
I specialize in fast debugging and clean code fixes to get your application running smoothly without breaking existing functionality.
What I Can Fix for You:
React.js & Next.js: State management, Hooks, component re-rendering, UI/responsive glitches
Backend & APIs: Node.js, Express.js errors, REST API integration, CORS issues, 404/500 server errors
Database & Queries: MongoDB connection drops, aggregation pipelines, CRUD & schema issues
Auth & Security: JWT tokens, user authentication, session handling, protected routes
Frontend Functionality: Forms, validations, npm package conflicts, JavaScript/TypeScript errors
️ My Debugging Process:
1. Replicate & identify the exact root cause
2. Implement clean, maintainable fixes
3. Full regression testing (ensure no other feature breaks)
4. Fast 24-hour turnaround
Tech Stack:
React.js | Next.js | Node.js | Express.js | MongoDB | JavaScript | TypeScript | REST APIs | Tailwind CSS
️ IMPORTANT: Please drop me a message with your issue or error screenshot before placing an order so we can confirm the exact scope and delivery time!
Respect third-party rights
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Get to know veni yadav
Full Stack MERN and Next js Developer
- FromIndia
- Member sinceMay 2025
- Avg. response time1 hour
Languages
Hindi, English, Arabic
My Portfolio
Other Website Maintenance Services I Offer
FAQ
How will you access my project code?
You can share a GitHub/GitLab repository invite, zip file, or we can use AnyDesk/TeamViewer if you prefer live debugging without sharing your source code.
Will your fix break other existing features of my web app?
No. I follow a strict testing process to ensure the bug is fixed without altering or impacting any existing functionality or codebase.
Can you fix third-party API integration or CORS issues?
Yes, I regularly solve CORS header errors, JWT authentication problems, payment gateways (Stripe/PayPal), and third-party REST API connection failures.
Do you work with Next.js and TypeScript as well?
Yes! Along with standard MERN stack, I handle Next.js SSR/CSR issues, TypeScript type errors, and modern build/deployment bugs.

