I will build a secure rest API with java and spring boot

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exar_lab
Exar V
build a secure rest API with java and spring boot
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build a secure rest API with java and spring boot

About this gig

I build clean, secure and well-documented REST APIs with Java and Spring Boot.


What you get:

  • RESTful endpoints built on your data model (Spring Boot, Spring Data JPA, MySQL)
  • Input validation and clear error handling
  • JWT authentication and role-based access with Spring Security (Standard and Premium)
  • OpenAPI docs, unit tests and Docker setup (Premium)
  • Postman collection to test every endpoint
  • Clean, commented source code

Why me:

  • Backend developer focused on Java and Spring Boot
  • Spec-first and test-driven: we agree on the endpoints before I write code
  • My portfolio includes a banking backend with Kafka and JWT, and a multi-service notification platform

How it works: send me your data model or a short brief, we confirm scope, and I deliver on time. Not sure which package fits? Message me before ordering.

  • Expertise

    • Security
    • Databases
    • Testing procedures

  • Programming language

    • Java

  • Backend framework

    • Spring Boot

Get to know Exar V

Exar V

Backend Developer

  • FromCosta Rica
  • Member sinceOct 2026

  • Languages

    Spanish, English
I am a backend developer specialized in Java and Spring Boot, with working knowledge of Python. I build production-grade systems end-to-end applying Hexagonal Architecture, Clean Architecture, and Domain-Driven Design. I have experience designing banking services and AI-driven cybersecurity agents.

My Portfolio

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