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I will fix go golang backend rest API bugs
Md. Khairozzama
 Backend, REST API React Bug Fixing Services_ltn3ck.jpg)
About this gig
Is your Go backend, REST API, or React + Go application not working as expected?
I will debug, fix, and improve your existing Go (Golang) backend, REST APIs, and React integration issues.
I can help with:
- Go backend bugs and REST API errors
- CRUD, routing, middleware, CORS, JSON & HTTP issues
- React + Go API integration problems
- API requests, responses, data fetching & authentication issues
- JWT, login, registration, authorization & protected route issues
- PostgreSQL, SQLx, database connection & query errors
- Slow APIs, inefficient queries & backend performance issues
- Code refactoring and existing backend improvements
My debugging process focuses on finding the root causenot just hiding the error. I analyze the issue, reproduce the problem, identify the root cause, implement a clean solution, test the affected functionality, and verify the result.
I work with Go, REST API, React, PostgreSQL, SQLx, JWT, bcrypt, Git, and Postman.
Please contact me before ordering with your issue, error details, source code, and project requirements so I can review the scope.
Get to know Md. Khairozzama
Md. Khairozzama
Go Backend Developer, REST API and PostgreSQL Specialist
- FromBangladesh
- Member sinceAug 2026
- Avg. response time1 hour
Languages
English
Hi, I'm Md. Khairozzaman, a Go Golang Backend Engineer based in Dhaka, Bangladesh. I build secure, production-ready RESTful APIs using Clean Architecture, Repository Pattern, and PostgreSQL, with JWT authentication, RBAC, pagination, and rate limiting.
I have built a SaaS Job Portal backend and CommerceCore, a modular E-commerce REST API with full CRUD, JWT auth, and optimized queries.
CS graduate, also experienced in Flutter and React. Message me with your project details before ordering for an accurate scope and timeline.
My Portfolio
Other Software Development Services I Offer
FAQ
Can you fix bugs in an existing Go (Golang) backend?
Yes. I can investigate and fix existing Go backend bugs, REST API errors, CRUD issues, routing, middleware, CORS, JSON, and HTTP-related problems.
Can you fix React and Go API integration issues?
Yes. I can troubleshoot React + Go API communication issues, including API requests, responses, data fetching, authentication tokens, CORS, login, registration, and protected routes.
Can you fix authentication and JWT issues?
Yes. I can troubleshoot JWT authentication, login and registration bugs, token validation, authorization, RBAC, protected routes, bcrypt/password hashing, and secure middleware issues.
Can you fix PostgreSQL and SQLx database issues?
Yes. I can troubleshoot PostgreSQL connection problems, SQL query errors, SQLx issues, CRUD database problems, slow queries, connection issues, and transaction-related problems.
Can you optimize a slow Go backend or REST API?
Yes. I can investigate slow APIs, high response times, inefficient backend code, slow database queries, and other performance issues, then apply appropriate optimization and refactoring.
