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

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Flavio S

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

Flavio S

Software Developer

  • FromBrazil
  • Member sinceSep 2026
  • Avg. response time1 hour
  • Languages

    Portuguese, English
I am a Software Developer based in the Fortaleza region with technical expertise in Spring MVC, Spring Data, and Docker. I focus on building robust applications and continuously improving my skills in Python and backend technologies to deliver high-quality software solutions.