I will secure java spring boot rest apis and backend integrations

M
masssimeliano
M
masssimeliano
Max K
secure java spring boot rest apis and backend integrations
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secure java spring boot rest apis and backend integrations

About this gig

Are you looking for a reliable Java developer to build a secure REST API, backend application, or system integration?


I develop clean, maintainable, and well-structured backend solutions using Java and Spring Boot. I have professional experience with enterprise applications, API development, data synchronization, application migration, data export, logging pipelines, and OAuth-secured API gateways.


What I can build:

  • Custom REST APIs and backend applications
  • CRUD operations and business logic
  • PostgreSQL or MySQL database integration
  • Spring Security, OAuth2, JWT, and role-based access
  • Third-party API integrations and webhooks
  • Data synchronization, transformation, and export
  • Validation, exception handling, and logging
  • Swagger/OpenAPI documentation
  • Unit and integration tests
  • Docker configuration


Technologies: Java, Spring Boot, Spring Security, JPA/Hibernate, SQL, Liquibase, Gradle, Docker, JUnit, Mockito, and Testcontainers.


You will receive readable source code, clear documentation, and a solution tailored to your requirements.


Please contact me before ordering so we can define the scope and select the right package

  • Expertise

    • Algorithms & Data structures
    • Debugging
    • Performance
    • Security
    • Databases

  • Programming language

    • Java

  • Frontend framework

    • Angular

  • Backend framework

    • Spring Boot

Get to know Max K

Max K

Java Software Developer

  • FromGermany
  • Member sinceJun 2023
  • Avg. response time1 hour

  • Languages

    English, Russian, Ukrainian, German
I am a backend developer with over two years of experience developing and maintaining enterprise applications. My stack includes Java, Spring Boot, SQL, REST APIs, Docker, GitLab CI/CD, JUnit, and Mockito. I build APIs, system integrations, data-processing services, automated workflows, and solutions for data export and application migration. My work also covers logging and analysis pipelines, authentication, testing, debugging, and performance optimisation. I use AI-assisted tools such as Claude Code where they improve productivity. I am pursuing a Master's degree in Applied Computer Science.

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