All Services Programming & Development Apps & Mobile Backend Development with Java Spring $5/hr · Starting at $25 I build secure and scalable backend APIs using Java Spring Boot. Whether you need a new REST API from scratch or want to extend an existing system, I can handle authentication (JWT), CRUD operations, file uploads, pagination, and integration with databases like MySQL or PostgreSQL. I focus on clean, maintainable code and clear documentation About $5/hr · Ongoing Download Resume I build secure and scalable backend APIs using Java Spring Boot. Whether you need a new REST API from scratch or want to extend an existing system, I can handle authentication (JWT), CRUD operations, file uploads, pagination, and integration with databases like MySQL or PostgreSQL. I focus on clean, maintainable code and clear documentation Skills & Expertise API DevelopmentApp & Mobile ProgrammingComputer EngineerDatabase DevelopmentJavaJava DevelopmentJWTMySQLOAuthPostgreSQLProgrammingResponsive Web DesignSoftware DevelopmentSpring BootSpring DataSpring JPASpring SecurityWeb Development Related Work Collections CRM system integrated with Bitrix24 0 Reviews This Freelancer has not received any feedback. Browse Similar Freelance Experts Software DevelopersResponsive Web DesignersSpring Boot DevelopersJava DevelopersHTML DevelopersComputer ProgrammersWeb DevelopersMySQL DevelopersPostgreSQL DevelopersUser Interface Designers (UI)TypeScript DevelopersJavaScript DevelopersComputer EngineersHTML5 DevelopersAPI DevelopersDatabase DevelopersAngularJS DevelopersCSS Developers