I will build rest apis and backend services with java go or nodejs


About this gig
I will build your backend services and REST APIs using Java, Go, or Node.js.
Whether you need a simple API, a database-backed service, or a complete backend system I can help.
What I offer:
RESTful API development
Backend service design and implementation
Database integration (MySQL, PostgreSQL)
Code review and refactoring
Bug fixes and feature additions
Why work with me:
Clean, maintainable code
Clear communication throughout the project
On-time delivery
Willing to discuss requirements before starting
Technologies I work with:
Java | Go | Node.js | REST APIs | SQL | Git
Contact me before placing an order to discuss your project requirements.
FAQ
Q: What information do you need from me to start?
A: A brief description of what you need, your preferred tech stack (Java/Go/Node.js), and any existing code or specifications.
Q: Do you provide source code?
A: Source code is included in Standard and Premium packages. For Basic, source code is available as an add-on.
Q: Can you work with my existing code?
A: Yes, I can review, refactor, or extend your existing backend code.
Get to know Leo S.
Software Developer Javascript Java Go Backend Systems
- FromChina
- Member sinceJun 2026
Languages
Chinese, English

