Passed the 21st Administrative Examination

Ministry of Trade, Industry and Energy General Affairs Manager

Electric Power Industry Structure Reform Team Leader

Embassy of the German Embassy in Germany

Director of living industry

Regional Industry Balanced Development Planning Office

Agricultural and Fisheries Construction Deliberation Officer, Prime Minister's Office

Secretary of the Presidential Secretariat’s Economic and Administrative Regulations Inspection Team

Director, Radio Broadcasting Policy Bureau, Ministry of Information and Communication

Served as a standing member of the Trade Committee (Level 1), etc.

Energy Management Corporation (Current Korea Energy Agency) Chairman

President of Korea Automotive Technology Institute (currently Korea Automobile Research Institute)

Director of Korea Evaluation Institute of Industrial Technology

President of Control Robot System Society

Seoul National University of Science and Technology Visiting Professor

Served as permanent advisor at the Global Legislative Policy Research Institute

Energy Industry and Corporate Advisory Advisor, Lawfirm Sanwoo