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I will fix java spring boot bugs and rest API errors
Chun Peng
About this gig
Is your Spring Boot endpoint returning an error or accepting invalid requests? I fix one agreed, reproducible API issue with a regression test and clear verification notes.
I have 6+ years of professional experience with Java, Spring Boot and SQL.
Message me with the error, reproduction steps and expected result before ordering so I can confirm the scope.
This package covers one endpoint in one existing application: request validation, response handling, or a simple database query or mapping error.
You receive:
- The source-code fix or patch
- A relevant regression test
- A short explanation and verification steps
Provide a locally runnable project, setup instructions and sanitized test data. Do not send production credentials or customer data.
New features, major upgrades, infrastructure work, performance investigations, production deployment and ongoing support need a separate scope.
Delivery: 5 days. One revision covers the original issue, not new functionality.
Get to know Chun Peng
Chun Peng
Java, Spring Boot and Angular Developer, APIs and Frontend
- FromSingapore
- Member sinceSep 2026
- Avg. response time1 hour
Languages
Chinese, English
I have 6+ years of experience building financial platforms with Java, Spring Boot and SQL. I work on REST APIs, backend integrations, bug fixes, batch processing and database queries. I also build responsive Angular pages with clear layouts and thoughtful animation. I hold a Bachelor of Information Technology (Honours), specialising in Software Systems Development. I focus on well-defined tasks, tested code and practical handover notes. Share your requirements so we can agree on scope and delivery before starting.
My Portfolio
FAQ
Should I contact you before ordering?
Yes. Send the error, reproduction steps, expected result and versions. I will confirm whether it fits this package. Larger or uncertain issues need a separate diagnostic scope; an investigation does not guarantee a fix.
What does the included revision cover?
One revision addresses the delivered fix against the original acceptance criteria. New requirements, unrelated bugs and additional endpoints require a separate agreement.
Do you use AI coding tools?
I may use AI tools to assist implementation and testing, with my own review. Please share your AI and confidentiality requirements before ordering. Code is used with these tools only within the agreed permissions.
