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


Informazioni su questo servizio
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!
Rispettare i diritti di terzi
Ricorda che è contrario alle politiche di Fiverr per i freelance includere temi, modelli o qualsiasi altro elemento che violi i diritti di terzi o le leggi applicabili nell'opera consegnata. Per saperne di più, consulta Guida alla creazione digitale responsabile.
Scopri di più su veni yadav
Full Stack MERN and Next js Developer
- DaIndia
- Membro damag 2025
- Tempo di risposta medio1 ora
Lingue
Hindi, Inglese, Arabo
Il mio portfolio
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.

