2022.01 ~ Present: FTI Co., Ltd. CEO
2018.05 ~ Present: Information and Communications Industry Promotions Agency, Information and Communications Planning and Evaluation Institute, Evaluation Institute and Promotion Agency of Technology Information for Small and Medium sized Businesses
2005.12 ~ 2019.05: Director of CCG (Communication Computing Group) at Intel
2003.06 ~ 2005.12: Managing Researcher at Exa Telecom Research Institute
2000.02 ~ 2003.02: Managing Researcher at Pantech Research Institute
1997.01 ~ 2000.02: Senior Researcher at Daewoo Telecom Central Research Institute Satellite Communications