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$
USD
I will develop or maintain java spring boot rest apis
Raenovaldy A
About this gig
About This Gig Looking for a robust, scalable, and secure backend for your application? Or do you need an expert to maintain, debug, and optimize your existing Java application? You are in the right place!
I am a professional Backend Developer specializing in Java and the Spring Boot framework. Whether you need a brand-new MVP, RESTful APIs, or urgent bug fixes, I deliver clean, production-ready code tailored to your business needs.
What I Can Do For You:
- ️Full Backend Development: Build secure and scalable backend systems from scratch.
- RESTful API Development: Design and integrate clean APIs with Swagger/OpenAPI documentation.
- Security Integration: Implement robust authentication using JWT, Spring Security, or OAuth2.
- ️ Database Integration: Connect and optimize MySQL, PostgreSQL, MongoDB, or Oracle using Spring Data JPA/Hibernate.
- Bug Fixing & Maintenance: Debug, upgrade Spring Boot versions, and optimize legacy code performance.
- Clean Code: Adherence to SOLID principles and Clean Architecture.
- High Performance: Optimized queries and efficient memory management.
Get to know Raenovaldy A
Raenovaldy A
Programmer
- FromIndonesia
- Member sinceApr 2026
- Avg. response time1 hour
Languages
Indonesian, English
I am a graduate of informatics engineering. I am very active in organizations, so I have wide connections and the ability to appear in public. I currently work as a programmer at a financial company in Jakarta, Indonesia.
FAQ
What do you need from me to start the project?
To get started, I need a clear description of your requirements. If available, please provide your project scope, wireframes/API documentation, database design, or the existing source code (if it's a maintenance project).
Which versions of Java and Spring Boot do you work with?
I am flexible and can work with Java 8, 11, 17, up to Java 25. For the framework, I standardly use Spring Boot 4.x, but I can also maintain or upgrade legacy projects using Spring Boot 2.x. and Spring Boot 3.x.
What databases do you support?
I have extensive experience integrating relational databases like MySQL, PostgreSQL, and Oracle, as well as NoSQL databases like MongoDB. I use Spring Data JPA, Hibernate, or JDBC for database operations.
Will you write unit tests for the backend?
Yes! Code reliability is highly important. I write unit and integration tests using JUnit and Mockito to ensure your business logic works flawlessly and stays bug-free during future updates.
What happens if a bug is found after the order is completed?
I offer a support period (usually 7-14 days) after delivery depending on the package. If any bug arises from my delivered code during this period, I will fix it free of charge.
