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

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Leo S.

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.

Leo S.

Software Developer Javascript Java Go Backend Systems

  • FromChina
  • Member sinceJun 2026
  • Languages

    Chinese, English
Backend developer with experience in Java, Go, and Node.js. I build server-side applications and REST APIs that are clean, reliable, and maintainable. What I can help with: • Backend services in Java / Go / Node.js • RESTful API design and implementation • Writing unit tests and integration tests • Code review and performance optimization • Debugging and refactoring existing code I take time to understand requirements before writing code, and I communicate clearly throughout the project. Let's discuss how I can help with your next project!