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I will fix java and spring boot backend bugs
Manuel Miranda
About this gig
Do you have a Java or Spring Boot backend bug that is causing errors or unexpected behavior?
I'm a Software Engineer experienced in debugging backend applications and production issues. I will investigate the problem, identify the root cause, and provide a clean and reliable fix.
What I can help you with:
- Java errors, exceptions, and unexpected behavior
- Spring Boot application issues
- REST API bugs and endpoint errors
- API requests, responses, and integration problems
- Database and JPA/Hibernate issues
- Authentication and backend logic problems
- Debugging logs, stack traces, and runtime errors
- Backend performance issues
Why work with me?
- Focused root-cause analysis
- Clean and maintainable fixes
- Clear explanation of the problem and solution
- Professional debugging process
- Clear communication
What I need from you:
- A clear description of the issue
- Your relevant code or project files
- Error messages, logs, or stack traces
- Steps to reproduce the problem
Let's find the cause and get your backend working correctly again!
Get to know Manuel Miranda
Manuel Miranda
Java and React Developer, Bug Fixing Specialist
- FromEl Salvador
- Member sinceDec 2025
Languages
Spanish, English
Hi! I'm a Software Engineer with strong experience in building web applications using Java, Spring Boot, React, SQL Server and Oracle.
I specialize in fixing bugs, improving existing systems, optimizing performance, and developing small to medium features.
I have experience working with REST APIs, authentication, integrations, deployments, and database troubleshooting.
My focus is always on clean code, fast delivery, and clear communication.
If you need a quick fix, a small feature, or help solving an issue in your backend/frontend — I’m here to help.
FAQ
What do you need from me to get started?
I need a clear description of the issue, access to the relevant code (GitHub, GitLab, Bitbucket, or ZIP), and steps to reproduce the problem. Error messages, logs, and API details are also helpful.
Can you fix Spring Boot API issues?
Yes. I can debug Spring Boot REST APIs, controllers, services, database issues, request/response problems, exceptions, and integration issues.
Can you work with database-related backend bugs?
Yes. I can investigate backend issues involving SQL queries, database connections, JPA/Hibernate, entities, repositories, and data-related errors.
Can you fix authentication or API integration issues?
Yes. I can troubleshoot common authentication and API integration problems, including JWT, request handling, REST APIs, and issues connecting backend services.
What if my issue is more complex than expected?
If the issue requires more time or falls outside the selected package, I will explain the situation before doing additional work. We can then agree on the best approach or a custom offer.
