WOONGJIN, Inc. is seeking a skilled Java Developer to join our rapidly growing team. The successful candidate will be responsible for maintaining and troubleshooting existing portal systems, as well as developing and implementing enhancements and updates to the current portal. This role requires analyzing business and system requirements to ensure technical feasibility, designing and developing software using Java, Maven, Spring Framework, and Oracle, and collaborating with internal stakeholders and external vendors to provide technical direction and support. The developer will also be expected to write clean, efficient, and testable code, ensure quality and stability through code reviews, unit testing, and debugging, and support deployment, integration, and ongoing system reliability.