• Past) Advisor, National Intelligence Service 
• Past) Adjunct Professor, Dongguk University 
• Past) National Tax Commissioner
• Past) Gangnam LLC
• Past) Korea Legal Aid Corporation
• Past) General Secretary, Korean Women Lawyers Association
• Past) Lecturer, National Tax Officials Training Institute, Korea Customs Service, and Samsung Financial Training Center
• Current) Arbitrator, Korea Commercial Arbitration Center
• Current) Adjunct Professor, Ewha Womans University, School of Law
• Current) Lecturer, Ministry of Justice Legal Training Center, Korea Financial Training Center, Financial Investment Association 
• Current) Member, the Financial Services Commission's Anti-Money Laundering Education Advisory Committee
• Current) Mediator, Industrial Property Dispute Mediation Committee, KIPO
• Current) Member, Crime Victim Protection Practices Committee, Ministry of Justice
• Current) Member, the Information Disclosure Review Committee, Korea Press Foundation
• Current) Member, Jungnang-gu Audit Committee, Member of Guri City Information Disclosure Review Committee, Member of Hanam City Personnel Committee, etc.
• Current) Advisor, Air Force Operations Command 
• Current) Member, TV Chosun Viewers' Committee 
• Current) Director, Financial Lawyers Association, Korean Bar Association
• Current) LIN