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I will fix, debug or refactor your spring boot java application
Kevin J
About this gig
Is your Spring Boot app broken, throwing errors, or stuck on version 2? I fix it fast clean code, root cause explained, production-ready.
I am a Java Backend Engineer and AWS Certified Solutions Architect with real-world experience debugging and refactoring Spring Boot applications.
WHAT I CAN FIX OR IMPROVE:Spring Boot bugs, exceptions, and runtime errorsSpring Boot 2 3 migration (Jakarta EE, Java 17, Security 6, Hibernate 6)REST API issues: JWT auth, role-based access, CORS, SwaggerDatabase problems: JPA, Hibernate, MySQL / PostgreSQL queriesPerformance bottlenecks and slow response timesMessy, untestable code full refactor to clean architectureDependency injection, configuration, and startup issues
WHY CHOOSE ME:AWS Certified Solutions Architect I understand your full stackI explain every fix so you understand what went wrongClean, maintainable code with detailed commentsFast turnaround and clear communication
Share your code, error logs, or describe the issue I'll take it from there.
Get to know Kevin J
Kevin J
Java Backend Engineer
- FromAustralia
- Member sinceOct 2024
Languages
English, Chinese
I am a Java Backend Engineer and AWS Certified Solutions Architect with extensive experience in software design and engineering. I have a strong background in Java development across various industries, and I am currently exploring full-stack development with Next.js, TypeScript, and Claude Code to build modern applications.
Other Software Development Services I Offer
FAQ
What do you need from me to get started?
Please share your project repository or code files, a description of the bug or issue, any error messages or stack traces, and your Spring Boot version. The more details you provide, the faster I can identify and fix the problem.
