| 2023-Present | Lee & Ko | 
													
															| 2023-Present | Outside Director of SGC Energy | 
													
															| 2022-2023 | Senior Executive Officer, Industrial and Market Management Division, Korea Financial Investment Association | 
													
															| 2020-2022 | Executive Director, Industrial and Market Management Division, Korea Financial Investment Association | 
													
															| 2020 | Member, Working Committee of the Special Committee on Capital Market Revitalization | 
													
															| 2019-2022 | Member, ATS Establishment Review Committee | 
													
															| 2019 | Director, Member Services Division, Korea Financial Investment Association | 
													
															| 2018-Present | Member, Advisory Committee of the Financial and Finance Division of the KOSDAQ Association | 
													
															| 2018-2019 | Head, External Services Division, Korea Financial Investment Association's | 
													
															| 2017-2023 | Judges for IB Awards, including Korea Economic Daily, Maeil Business News, Yonhap Infomax, and Korea Herald Business | 
													
															| 2016-2018 | Managing Director, Securities and Derivatives Service Headquarters, Korea Financial Investment Association | 
													
															|  | Member, Credit Information Intensive Management Committee, Korea Financial Investment Association | 
													
															| 2015-2016 | Deputy Director, WM Service Headquarters, Korea Financial Investment Association | 
													
															| 2013-2015 | Director, Pension Support Office, Korea Financial Investment Association | 
													
															| 2012-2013 | Head, Bond Department, Korea Financial Investment Association | 
													
															| 2010-2012 | Director, Self-Regulatory Planning Division, Korea Financial Investment Association | 
													
															| 2008-2010 | Member Jeju International Free City Center Asset Management Committee | 
													
															| 2007-2009 | Head, Working Group on the Integration of Three Associations | 
													
															| 2006-2010 | Head, Bond Department, Korea Securities Association | 
													
															| 2001-2003 | Head, Supervision Team of KOSDAQ Market Committee | 
													
															| 1990-1995 | Securities Market Stabilization Fund Manager |