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$
USD
I will build java spring boot backend apis for your business app
Rony Reyna
About this gig
Turn your business requirements into a maintainable backend. I build Java and Spring Boot REST APIs, SQL-backed modules and business logic for existing or new applications. Basic delivers one agreed endpoint in an existing project. Standard adds one CRUD module. Premium provides a small backend foundation with up to two entities, login and two roles. Deliverables include source code, tests and API documentation. Please message me before ordering to confirm the data model, rules and acceptance criteria. Frontend screens, hosting charges and additional modules are quoted separately. Written communication in Spanish or basic English.
Get to know Rony Reyna
Rony Reyna
Java and Spring Boot Developer, REST APIs and SQL
- FromEcuador
- Member sinceOct 2026
Languages
Spanish, English
Java and Spring Boot developer with over 8 years of experience in business software. I fix reproducible bugs, integrate REST APIs and improve CRM and ERP applications. I work with SQL, Docker, Maven and Git, plus React and TypeScript. AI and automation complement my backend work. We agree on scope and acceptance criteria first. Deliverables include a focused code change, verification and a brief explanation. Available for freelance projects, with hours and deadlines agreed per engagement. Native Spanish; basic English. Written communication preferred.
Other Software Development Services I Offer
FAQ
Should I contact you before ordering?
Yes. Share your business rules, data model, existing code if available and expected API behavior on Fiverr. We confirm the scope and test setup before ordering.
What counts as one revision?
One adjustment within the agreed module and acceptance criteria. Additional entities, features or changed requirements need a separate offer.
Are frontend and hosting included?
Frontend screens, hosting bills and production deployment are excluded. I provide tested backend code, documentation and setup notes.
What do the packages deliver?
Basic: one endpoint in an existing app. Standard: one CRUD entity, up to four endpoints. Premium: a small backend with two entities, login, two roles and Docker.
