Software Engineer (Web, Mobile & Branch Systems)
2023 – 2025KB Kookmin Bank · Seoul, South Korea
- Owned the development and maintenance of MVNO (Mobile Virtual Network Operator) systems.
- Developed and maintained standards-compliant web and hybrid applications using Spring Boot, JSP, and modern front-end technologies (HTML/CSS/JavaScript).
- Built and maintained branch staff terminal software, integrating COBOL-based back-end workflows and developing and modifying UI screens using a template-based UI builder.