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I will fix your java spring boot and hibernate bugs fast
Supanat R.
About this gig
Production broken? Weird exception you can't trace? I'll find it and fix it.
I'm a backend developer with years of hands-on experience in Java, Spring Boot, Hibernate/JPA, and MySQL on enterprise systems. I specialize in the bugs that waste your whole day:
Exceptions & stack traces (NullPointer, DataIntegrityViolation, LazyInitialization...)
Hibernate/JPA issues locking, N+1 queries, flush behavior, mapping errors
Hibernate version migration problems (5 6 7)
Slow MySQL queries & database performance
Spring configuration, dependency injection, Gradle/Maven build failures
REST API bugs and integration issues
How it works:
- Send me your error message, stack trace, or describe the behavior
- I diagnose the root cause (not just a patch over the symptom)
- You get the fix + a clear explanation of why it happened
All communication in chat clear written updates, no calls needed. I explain everything so your team learns from the fix.
Not sure if your issue fits? Message me first I'll tell you honestly before you order.
Get to know Supanat R.
Supanat R.
Full Stacked Developer Bug fixing and performance tuning for Java Spring Boot
- FromThailand
- Member sinceJul 2026
- Avg. response time1 hour
Languages
Thai, English
Backend developer working on enterprise Java systems — Spring Boot, Hibernate/JPA, and MySQL — where correctness and stability matter.
What I do:
Fix bugs and exceptions (NullPointer, DataIntegrityViolation, locking, N+1 queries)
Optimize slow MySQL queries with EXPLAIN analysis and proper indexing
Build documented REST APIs with Spring Boot
Fix Gradle/Maven build and config issues
I find the root cause, not just a patch. Everything explained in writing, chat-based, fast and clear.
Not sure your problem fits? Message me first — I'll answer honestly before you hire.
FAQ
Do you need access to my code?
A minimal reproducible snippet is usually enough. For repo access, a private GitHub invite works.
Do you do calls?
I work async via chat. Written communication means you get documented, searchable answers.
My issue is urgent, can you start now?
Add the "Extra Fast" option and I'll prioritize it.
What about timezone differences?
I'm in GMT+7 (Thailand). For US and European clients this usually works in your favor: send your issue at end of your day, and it's often fixed by your next morning. All communication is async chat, so no scheduling needed.
