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$
USD
I will build java spring boot rest apis and backend applications
Chi
About this gig
Need a backend for your web or mobile app, or a new feature in an existing Java project? I build Java/Spring Boot REST APIs and backend modules around clear requirements.
WHAT I BUILD
- REST endpoints with validation and consistent error responses
- Business logic and PostgreSQL/MySQL database integration
- API integrations and extensions to existing backends
- Tests, API documentation and setup instructions
PACKAGES
Basic: 1 simple endpoint without database integration.
Standard: 1 module, up to 3 endpoints and 2 database tables.
Premium: 1 small service, up to 6 endpoints and 3 tables, with a written handover.
All packages include source code and focused tests. Endpoint limits do not include unlimited business logic or integrations.
WHY WORK WITH ME
7+ years of backend experience, around 5 years on AWS and AWS Solutions Architect Professional certification.
MESSAGE ME BEFORE ORDERING
Send your feature requirements, API examples, data model and project status. We will agree on scope and acceptance criteria first. Authentication, complex integrations, frontend development and AWS deployment can be scoped separately. Revisions cover the agreed requirements.
Get to know Chi
Chi
Java Spring Boot Backend Developer, AWS
- FromVietnam
- Member sinceFeb 2017
Languages
English
I help businesses build and fix Java/Spring Boot backends and design, deploy, maintain and monitor systems on AWS. I troubleshoot AWS issues, integrate REST APIs, and work with PostgreSQL, MySQL, Docker and CI/CD.
With 7+ years of backend experience, around 5 years on AWS and AWS Solutions Architect Professional certification, I focus on maintainable solutions and clear handover. I also work with Node.js and Rust.
Send your requirements or sanitized error logs so we can agree on scope, deliverables and support duration before starting.
FAQ
Should I contact you before ordering?
Yes. Send your requirements, project status and expected behavior. We will confirm endpoint complexity, database scope, deliverables and acceptance criteria before starting.
Can you extend an existing backend?
Yes. I can add features or integrations to an authorized existing Java/Spring Boot project after reviewing its setup and code. Share sanitized files and setup instructions.
Do you provide the source code and tests?
Yes. All packages include source code, focused tests and setup instructions. Standard and Premium include API documentation; Premium includes a written handover.
Are authentication and AWS deployment included?
They can be delivered under a separate agreed scope. The listed packages cover the backend limits described, without frontend development, production deployment or ongoing support.
What counts as one endpoint and a revision?
An endpoint is one agreed HTTP method and route with defined behavior. Complex workflows require review. Revisions adjust the agreed requirements; new features or integrations need a separate scope.
