wang jun

Fully remote Senior Java Backend Engineer role, working on microservice systems, API development and database optimization. Prefer long-term stable projects with clear technical requirements. I'm a Senior Java Backend Engineer with 15 years of professional experience in microservices, REST API design, and multi-terminal system development. Proficient in Spring Cloud, Spring Boot, Redis, MongoDB, MySQL, message queues, scheduled tasks and security authentication including JWT and Shiro. I have built business management, order & membership systems with strict user data protection, access control and multi-user permission management. Skilled in end-to-end system development, legacy project migration, deployment & monitoring, familiar with CI/CD and containerized deployment. I have delivered commercial platforms including local-life services, ERP, exam management, CMS and online training systems. I write clean, maintainable code, diagnose bugs rapidly and continuously improve system stability and data security. Strong cross-team communication skills. I’m eager to build digital health platforms, implement secure data workflows and deliver reliable patient-facing systems. Looking for fully remote backend roles and ready to collaborate with global remote teams.