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I will develop a professional rest API using java spring boot
Fernando
About this gig
DO YOU NEED A ROBUST AND SCALABLE BACKEND?
I am a Full-stack Developer with solid experience in the Java ecosystem. I specialize in building professional REST APIs using Spring Boot, following the best industry practices to ensure your system is fast, secure, and easy to maintain.
Why choose my services?
- Clean Code & Architecture: I implement Hexagonal Architecture and SOLID principles.
- Database Expertise: Advanced integration with MySQL, PostgreSQL, and SQL Server.
- API Integration: Expert in connecting third-party services (Google Maps, Payment Gateways, SOAP/REST).
- Security: Implementation of JWT and OAuth2 for protected data.
What I can do for you:
- Build a complete Backend from scratch.
- Fix complex bugs in existing Spring Boot applications.
- Optimize database queries for better performance.
- Modernize legacy Java code.
MY TECH STACK: Java | Spring Boot | Hibernate | JPA | Docker | Maven | SQL Server | Git
PLEASE CONTACT ME BEFORE PLACING AN ORDER so we can discuss your specific requirements and I can provide the best solution for your project.
Let's build something professional together!
Get to know Fernando
Fernando
Fullstack Developer
- FromBrazil
- Member sinceFeb 2026
Languages
Portuguese, English, Spanish
I am a dedicated Full-Stack Developer with solid experience in building scalable and efficient web applications. My expertise lies in the Java ecosystem, specifically Spring Boot, Hibernate, and JPA, where I focus on creating robust REST APIs and implementing clean architectures like Hexagonal Architecture.
I have a strong background in SQL Server and MariaDB, ensuring high-performance database management. Additionally, I am proficient in integrating third-party services. My goal is to provide high-quality code, following best practices like SOLID and design patterns to help your business grow
FAQ
Do you provide the source code?
Yes, the complete source code is included in all packages. I provide clean, well-commented code following SOLID principles and best practices.
Can you integrate the API with my existing database?
Absolutely. I have extensive experience with MySQL, PostgreSQL, and SQL Server. I can connect the Spring Boot backend to your current database or set up a new one from scratch.
Which architecture do you use for your projects?
I typically use Hexagonal Architecture or Layered Architecture (Controller, Service, Repository), depending on the project's complexity. My focus is always on maintainability and scalability.
Do you offer deployment services?
Yes, I can help you deploy your application to servers like AWS, DigitalOcean, or Heroku as an extra service. Please contact me to discuss the details.
