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I will fix spring boot bugs, java backend errors, and rest API issues
Mdasim Bage
About this gig
Struggling with a broken Spring Boot application or a failing REST API?
Hi, I'm Asim, a dedicated Java Backend Developer. I specialize in hunting down complex bugs, fixing API errors, and optimizing backend logic to ensure your application runs smoothly. Whether it's a small syntax error or a major logic flaw, I am here to provide a fast and reliable solution.
What I Can Fix For You:
- Spring Boot & Java: Dependency issues, Bean errors, and configuration fixes.
- REST API Troubleshooting: Resolving 401 Unauthorized, 404 Not Found, 500 Internal Server errors, and JSON mapping issues.
- Database & Persistence: Fixing JPA, Hibernate, and MySQL errors, including lazy loading and query optimization.
- Security: Troubleshooting Spring Security, JWT, and OAuth2 authentication/authorization.
- Clean Up: Code refactoring and improving performance.
My Process:
- Analyze: Deep dive into logs and source code.
- Root Cause: Identify exactly why the failure is happening.
- The Fix: Implement clean, maintainable, and industry-standard code.
- Validation: Rigorous testing to ensure the bug is gone for good.
Ready to get your project back on track? Send me a message, and let's get started!
Get to know Mdasim Bage
Mdasim Bage
Java and Spring Boot Backend Specialist Bug Fix Expert
- FromIndia
- Member sinceJun 2022
- Avg. response time1 hour
Languages
Urdu, English, Hindi
Expert Java & Spring Boot Backend Developer
Hi, I’m Asim, a Computer Science Engineer specializing in Java and Spring Boot backend development. I help businesses and developers fix critical backend bugs and build secure, scalable REST APIs.
What I do best:
• Spring Boot & Java backend development
• REST API design & debugging (401, 404, 500 errors)
• MySQL, JPA & Hibernate optimization
• Spring Security, JWT & OAuth2
• Clean code, refactoring & performance fixes
Clear communication, fast delivery, and reliable solutions—let’s build or fix your backend the right way.
Other Software Development Services I Offer
FAQ
Can you fix issues in legacy Java projects?
Yes! I can work with modern Spring Boot (3.x) as well as older Java versions and legacy Spring MVC projects.
What do I need to provide?
To start quickly, please provide the source code (or access to the repository), a brief description of the bug, and any error logs or stack traces you are seeing.
Do you offer long-term maintenance?
Yes. If you have an ongoing project that needs regular bug fixes and small feature updates, we can discuss a custom monthly offer.
How do you handle database security?
I never ask for your production credentials. I work on a local or staging environment and provide the fix so you can apply it safely to your live database.
