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$
USD
I will develop a java API for your application
Erick P
About this gig
Do you need a reliable Java API to power your application?
I specialize in building Java APIs from scratch or extending existing ones REST, WebSocket, or SOAP with experience maintaining live production systems handling real financial data.
What I can build:
- REST APIs with Spring Boot clean endpoints, authentication, error handling
- WebSocket APIs for real-time data and live updates
- SOAP APIs for enterprise and legacy system integration
- Database integration with PostgreSQL or MySQL
- Docker deployment for reliable server hosting
- Swagger/OpenAPI documentation
Every API I deliver is production-ready, well documented, and built with clean architecture that any developer can maintain.
Before ordering please share:
- What your API needs to do
- Which protocol you need
- Whether you need database integration
- Any existing codebase or tech stack
Not sure which package fits? Send me a message first.
Get to know Erick P
Erick P
Software Developer
- FromBrazil
- Member sinceFeb 2026
- Avg. response time1 hour
- Last deliveryabout 1 hour
Languages
English, Portuguese
Software developer specializing in Java, C++, JavaScript and PHP — with experience maintaining live production systems handling real users and real data.
I fix broken applications, modernize legacy codebases, build desktop applications, develop APIs, and deploy to production servers with Docker.
I work with projects most developers avoid — undocumented legacy code, complex integrations, and years of technical debt.
If your project can't be solved within scope, I'll tell you honestly before starting.
Other Software Development Services I Offer
FAQ
What Java version and frameworks do you use?
I work with Java 17 and above, primarily using Spring Boot for the API.
Can you work with my existing codebase?
Yes. I can extend an existing Java project, add new API endpoints to a running application, or build from scratch depending on your needs.
Do you provide the source code?
Yes, full source code is included in all packages. Standard and Premium also include detailed code comments so your team can maintain it easily.
How do I know which package I need?
Basic is for a single simple endpoint. Standard covers a complete API with database integration. Premium is for production-ready delivery with Docker deployment and full documentation. If unsure, message me first.
What if the project takes longer than expected?
I communicate proactively. If scope is larger than anticipated I will let you know before the deadline and discuss options, no surprises.
