I will build a secure rest API backend for your web or mobile app


About this gig
Hi, I'm a backend developer with 5+ years of experience building REST APIs with Java and Spring Boot.
I help startups and businesses build reliable, well-structured backends the engine that powers web and mobile apps.
What I can build for you:
- RESTful APIs with Spring Boot
- CRUD operations & clean endpoint design
- Secure authentication (JWT, roles & permissions)
- Database design (PostgreSQL, MySQL, Oracle)
- Third-party & payment API integration
- API documentation and testing
Why work with me:
- Enterprise background (banking & insurance systems) I build with security and scalability in mind
- Clean, maintainable, well-documented code
- Clear communication and delivery on time
- Full source code handover
Whether you need a simple API with a few endpoints or a complete backend system, I'll help you build it the right way solid and ready to scale.
Please message me before ordering so we can discuss your requirements and choose the best package for your project.
Get to know Nguyen Vo
Java Software Engineer
- FromVietnam
- Member sinceFeb 2017
- Avg. response time1 hour
Languages
English, Vietnamese
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FAQ
Do you provide the full source code?
Yes. You'll receive the complete, clean source code with documentation after delivery. The backend is fully yours to host, modify, and scale.
I'm not sure which package I need. Can you help?
Absolutely. Just message me with a short description of your project and what your app needs to do. I'll recommend the right package or send you a custom offer that fits your requirements and budget.
Do you build the frontend / UI as well?
This gig focuses on the backend (REST API, database, business logic). I can integrate with any frontend or mobile app. If you also need a frontend built, message me first — I can arrange a custom offer for full-stack work.
How long does delivery take?
Delivery depends on the package: the Basic API takes around 2 days, Standard around 3 days, and the complete backend around 4 days. If you have a deadline, message me first and I'll let you know what's possible.

