I will fix or develop any API integration

F
felipemelozx
F
felipemelozx
Felipe Melo
fix or develop any API integration
Full Screen
fix or develop any API integration

About this gig

Are you looking for a secure, fast, and scalable API for your application?


Your product depends on a solid backend. I design and build high-performance, secure REST APIs that scale with your business and integrate smoothly with third-party services.

I help startups and businesses connect systems, automate workflows, and expose clean APIs using Java and Spring Boot, always following best practices and production standards.


What I build

  • RESTful APIs with Spring Boot
  • Secure authentication & authorization (JWT, OAuth2, Spring Security)
  • Database design & optimization (PostgreSQL)
  • Third-party integrations (Payments, Maps, Messaging, SaaS APIs)
  • API documentation (Swagger / Postman)


How I deliver

  • Clear scope: endpoints, auth flow, and data models
  • Security by default: validation, error handling, and access control
  • Clean, scalable architecture ready for production
  • Well-documented code and API handoff


Tech stack

Java, Spring Boot, Hibernate, Maven/Gradle, PostgreSQL, AWS (EC2, S3, RDS)


Message me your goal and requirements before ordering, and I'll reply with a clear plan and next steps.

Let's build a backend your app can rely on.

  • Expertise

    • Debugging
    • Performance
    • Security
    • Databases
    • Testing procedures

  • Programming language

    • Java

  • Frontend framework

    • AngularJS
    • React.js
    • Tailwind CSS

  • Backend framework

    • Express.js
    • Node.js
    • Spring

Get to know Felipe Melo

Felipe Melo

full stack developer Java, Spring Boot, Angular, React, TypeScript, JavaScript

  • FromBrazil
  • Member sinceJan 2025
  • Avg. response time10 hours
  • Last delivery2 months

  • Languages

    English, Portuguese, Spanish
I am a Full Stack Developer with experience building scalable, secure, and high-performance web applications. I work mainly with Java and Spring Boot to create robust REST APIs, apply security best practices, and deliver clean, maintainable code. On the front end, I develop responsive and user-focused interfaces using React and angular, with strong skills in JavaScript, TypeScript, HTML5, and CSS3. I value clear communication and reliable deliveries.

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