I will build fullstack applications with java and react


About this gig
Are you looking for a reliable back-end developer to build, fix or improve your system?
I can help you create REST APIs, authentication systems, database integrations, backend features and scalable services using Java, TypeScript, Node.js, Redis, PostgreSQL, MySQL or MongoDB.
I have experience working with real-world backend systems, including infrastructure for high-traffic Minecraft networks with hundreds of simultaneous users.
What I can do for you:
- REST API development
- Backend feature implementation
- Bug fixing
- Database modeling
- JWT authentication
- Redis integration
- Docker setup
- API documentation with Swagger/OpenAPI
- Clean code and maintainable structure
Please contact me before placing an order so we can discuss your requirements.
Respect third-party rights
Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.
Get to know Gabriel Barreto
Web Developer
- FromBrazil
- Member sinceJun 2026
Languages
English
FAQ
Do you work with existing projects?
Yes. I can fix bugs, add features or improve existing backend systems and Minecraft plugins.
Can you work with databases?
Yes. I can work with PostgreSQL, MySQL, SQLite and MongoDB.
Can you create API documentation?
Yes. I can document APIs using Swagger/OpenAPI when needed.
Do you work with Minecraft servers?
Yes. I can develop custom plugins and backend systems for Minecraft servers and networks.
Should I contact you before ordering?
Yes. Please contact me first so I can understand your requirements and confirm the best package for your project.
