At Hanpass Co., Ltd., I defined and launched the Hanpass–UnionPay mobile card journey, translating UnionPay API specifications into application, issuance, and QR payment requirements. I also defined MPM and CPM payment logic, including static and dynamic QR flows and their success, failure, and exception conditions.
At Planet Dots Co., Ltd., I defined workflows and functional requirements for LG Energy Solution’s B2B back-office platform and coordinated implementation with engineers. Earlier, I delivered digital projects at JK Data Systems Co., Ltd., including public-sector transformation projects for the National Museum and National Library.

