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I will debug and fix nodejs express rest API errors
Yaseen Akhtar
About this gig
Is your web application throwing errors, APIs failing, or frontend and backend not communicating properly?
I will debug and fix issues in your existing Node.js, Express, TypeScript, React, REST API, PostgreSQL, Prisma, MongoDB, or Mongoose application.
I can help with:
- Node.js and Express errors
- REST API and endpoint issues
- React frontend bugs
- Frontend API integration problems
- JWT authentication and authorization issues
- CORS, validation, routing, and middleware errors
- PostgreSQL, Prisma, MongoDB, and Mongoose issues
- TypeScript errors and backend logic bugs
- API request/response and data-handling problems
- Build, dependency, and deployment-related errors
My approach: I reproduce the issue, identify the root cause, implement a clean fix, and test the affected functionality.
This Gig is for existing applications and bug fixing. New features, complete application development, major rewrites, and large refactoring are not included unless agreed separately.
Please provide the error details, steps to reproduce, relevant code/files, and expected behavior before ordering when the issue is complex.
Get to know Yaseen Akhtar
Yaseen Akhtar
Full Stack Developer Nodejs TypeScript PostgreSQL REST APIs
- FromPakistan
- Member sinceSep 2026
- Avg. response time1 hour
Languages
Urdu, English
I'm a backend-focused full-stack developer who builds REST APIs, multi-tenant systems, and SaaS applications with Node.js, Express, TypeScript, PostgreSQL, MongoDB — clean architecture, production-ready code, no quick hacks that break later.
My latest project is TaskFlow, a multi-tenant SaaS I built end-to-end: role-based access, JWT auth, Kanban, React frontend — deployed live with CI/CD and 1,300+ automated tests.
I can help with API development, database design, bug fixing, MERN or full-stack projects. Clear, fast communication.
Defined scope, honest timelines. Message me your idea.
My Portfolio
Other Software Development Services I Offer
FAQ
What types of bugs can you fix?
I can debug Node.js, Express, TypeScript, REST API, React, authentication, API integration, PostgreSQL, Prisma, MongoDB, and Mongoose issues in existing applications.
Can you fix frontend and backend integration issues?
Yes. I can troubleshoot issues between a React frontend and Node.js/Express REST API, including request and response problems, authentication, CORS, validation, and incorrect data handling.
Can you work with my existing codebase?
es. This Gig is specifically for debugging and fixing existing applications. I can work with an existing repository and investigate the relevant code, logs, and errors.
Do you fix database and Prisma or Mongoose errors?
Yes. I can troubleshoot PostgreSQL, Prisma, MongoDB, and Mongoose-related errors when they affect your application or API.
Can you fix a completely broken or large application?
Complex applications and large-scale issues can be reviewed first. New features, complete rewrites, major refactoring, or extensive debugging may require a custom offer based on the actual scope.
