- Legal Attache, Embassy of the Republic of Korea in the US
- Chief Prosecutor, Criminal Investigation Division 7, Supreme Prosecutors’ Office
- Deputy Chief Prosecutor, Chungju District Prosecutors Office
- 1 Deputy Chief Prosecutor, Suwon District Prosecutors Office
- Head, Bucheon Branch of Incheon District Prosecutors Office
- Research commissioner at the Legal Research and Training Center
- Seoul Bar Association

- Judge, Seoul District Court
- Judge, Seoul Family Court,
- Lawyer, Barun Law LLC
- Lawyer, Korea Government Legal Service,
- Commissioner, Committee on Prosecution Reform
- Commissioner, Committee on Policy for Regional Public Enterprises
- Commissioner, Personal Information Protection Commission
- Standing Commissioner, Seoul Court Coordinating Center

- Former Co-chair, Korean Women’s Association United
- Former Member, Fact-finding Committee on Human Rights Violation, National Police Agency
- Former Chairperson, Subcommittee on Policy, Human Rights Committee of Seoul Metropolitan City
- Former member, Committee on Civil Society Development, Office of Prime Minister
- Former President, Korean Women Workers Association
- Former President, Incheon Women Workers Association
- Former President, Rehabilitation Center of Incheon and Bupyeong