I will fix, optimize, or debug your java backend application


Over deze dienst
Fix Java & Spring Boot Issues Fast Clean, Scalable & Reliable
Are you facing Java or Spring Boot errors, broken APIs, or performance problems?
I will identify, fix, and optimize your Java backend so your application runs smoothly and reliably.
With 4+ years of professional Java backend experience, Ive worked on banking and enterprise-grade systems where stability and performance are critical.
What I can Fix
- Java runtime errors & exceptions
- Spring Boot application bugs
- REST API issues
- Database & SQL performance problems
- Concurrency & multithreading issues
- Kafka & async processing bugs
- Code refactoring & optimization
Technologies I Work With
- Java
- Spring Boot / Quarkus
- Hibernate / JPA
- REST APIs
- Oracle / SQL
- Apache Kafka
- Docker
How I Work
- Analyze your issue or codebase
- Identify root cause (not temporary fixes)
- Apply clean, scalable solution
- Test & verify
- Deliver with explanation
Why Choose Me?
Real industry experience (banking & enterprise systems)
Clean, maintainable code
Clear communication
Fast response
No copy-paste fixes
Message me before ordering so I can quickly review your issue and suggest the best package.
Maak kennis met Muhammad Waqar
Senior Java Backend Engineer
- Afkomstig uitPakistan
- Lid sindsjan 2026
Talen
Engels
Veelgestelde vragen
Do you work with Spring Boot?
Spring Boot and Quarkus are my primary frameworks.
Can you fix production issues?
Yes, as long as access/logs/code are provided.
Will you explain the fix?
I always explain what was wrong and how it was fixed.
Do you work hourly?
Fiverr packages only. Custom offers available via message.
