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$
USD
I will build faster, cleaner spring boot backend fixed or refactored
Ponir Saha
About this gig
Have a Spring Boot backend bug, slow API, messy service logic, database performance issue, or codebase that needs cleanup?
I will inspect, debug, fix, optimize, or refactor your Java/Spring Boot backend so it is more reliable, maintainable, and easier to extend.
This gig is useful for:
- Spring Boot bug fixing
- REST API errors
- Slow endpoint investigation
- PostgreSQL/JPA performance issues
- Security or JWT issues
- Service-layer cleanup
- Code refactoring
- Test and handoff notes
I focus on root cause, not quick patches. I keep changes targeted, explain what was changed, and provide practical next steps so your team can move forward confidently.
Please message me before ordering if this is a production issue or if the codebase is large.
Get to know Ponir Saha
Ponir Saha
Senior Spring Boot Developer for APIs SaaS Kafka and AI RAG
- FromBangladesh
- Member sinceApr 2020
- Avg. response time1 hour
Languages
English
I am a Principal Software Engineer and Spring Boot Architect with 13+ years of experience building reliable backend systems, SaaS platforms, microservices, Kafka workflows, and AI/RAG features. I help clients build, fix, and scale Java/Spring Boot applications with secure REST APIs, PostgreSQL, MySQL, MongoDB, Docker, Spring Security, JWT, Redis, and OpenSearch. I focus on clean architecture, maintainable code, clear communication, and reliable delivery.
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FAQ
Can you fix production issues?
Yes, but I need logs, reproducible steps, and safe access rules. For urgent production work, please message me before ordering.
Can you work without running the full app locally?
Sometimes. The result is better when I can run tests or reproduce the issue, but I can still review code, logs, and provide a fix plan.
What if there are many bugs?
Please message me first. We can start with diagnosis, then split the fixes into clear milestones.
