At Microsoft Corporation in the United States (Redmond), In charge of the research and development of messaging systems, directory services, and globally distributed processing systems. Worked on optimizing network routing with machine learning, analyzing and modeling communication data (NLP). After serving as the head of the research and development group for server application group in East Asia, appointed as the Executive Officer and National Technology Officer in October 2009. Responsible to the standardization efforts for enterprise, cloud architecture, document formats, character encoding, and machine translation. Since September 2021, serving as the Principal Solution Architect at the Digital Agency.