I will develop robust backend rest API using java and spring boot


About this gig
Are you looking for a secure, scalable, and high-performance backend API for your application?
I am a Java Software Developer specialized in building robust RESTful APIs using Java 21 and Spring Boot 3. I focus on clean code, solid architecture, and industry standards to deliver maintainable software.
What I can do for you:
- Custom RESTful API development with Java & Spring Boot
- Database integration using Spring Data JPA (PostgreSQL, MySQL, H2)
- Security implementation with Spring Security & JWT
- CRUD operations, business logic, and DTO mapping
- Swagger / OpenAPI interactive documentation
- Unit and integration testing with JUnit & Mockito
Tech Stack:
- Java 21+, Spring Boot 3.x, Maven, Spring Data JPA
- Clean Code, Layered Architecture, SOLID principles
Why choose my service?
- Maintainable, readable, and well-structured code
- Detailed code comments and documentation included
- Reliable delivery with clear communication
Please contact me before placing an order to discuss your project requirements!
Get to know Flavio S
Software Developer
- FromBrazil
- Member sinceSep 2026
- Avg. response time1 hour
Languages
Portuguese, English
FAQ
What do I need to provide before starting the project?
Please provide a clear description of your requirements, including API endpoints details, business logic, data models, and preferred database type.
Do you provide complete source code and documentation?
Yes, all packages include full source code, clear code comments, and Swagger/OpenAPI documentation for testing the endpoints easily.
Can you build authentication and database integration?
Yes, I integrate databases using Spring Data JPA and can implement secure authentication using Spring Security and JWT in the relevant packages.
