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I will fix bugs and errors in your java spring boot backend
Nicolas B
About this gig
Is your Java Spring Boot application throwing errors, returning wrong data, or failing in production? I can help.
I'm a full stack developer with real experience on production systems for government and private-sector clients, working daily with Java, Spring Boot, Hibernate and SQL databases.
What I can fix:
- Runtime exceptions and unexpected errors
- REST API endpoints returning wrong or incomplete data
- Database and JPA/Hibernate query issues
- Authentication and authorization problems
- Performance issues on slow endpoints
- Configuration and dependency conflicts
How I work:
- You send me the error details and access to your repository
- I investigate the root cause, not just the symptom
- I deliver a tested fix, ready to merge
What you get:
- Clean, working code that follows your project's existing style
- A clear explanation of what was wrong and how I fixed it
- Fast, honest communication throughout
I work with Java 8 through 21, Spring Boot 2 and 3, PostgreSQL, Oracle, MySQL and Docker.
Not sure if your issue fits? Message me before ordering and I'll tell you honestly if I can help.
Get to know Nicolas B
Nicolas B
Full Stack Developer, Java, Spring Boot, Angular
- FromArgentina
- Member sinceApr 2024
- Avg. response time1 hour
Languages
Spanish, English, Portuguese
Self-taught Full Stack Developer with hands-on experience in Java, Spring Boot, and Angular. I've worked on real production systems for government and private clients, including legacy system modernization and Docker containerization. I focus on clean, reliable code and clear communication throughout every project. Let's build something solid together.
FAQ
What do you need from me to start?
The error message or stack trace, access to your repository (GitHub, GitLab or a ZIP file), and a short description of the expected behavior. If the bug needs specific data to reproduce, let me know how.
What if you can't fix my bug?
If after investigating I can't solve it, I'll tell you honestly and you get a full refund. I'd rather be upfront than waste your time.
Do you work with old Java versions?
Yes. I have experience with legacy systems running Java 6, 7 and 8, including JBoss Seam, JSF and EJB projects, not just modern Spring Boot.
Will my code stay private?
Yes. I don't share, reuse or publish any client code. If you need an NDA, just ask before ordering.
