- Judicial Research and Training Institute (17th class)
- Head of Goyang Branch, Uijeongbu District Prosecutors' Office
- Deputy Chief Prosecutor, Jeju District Prosecutors' Office
- Chief of Wonju Branch, Chuncheon District Prosecutors' Office
- Prosecutor, Daegu High Prosecutors' Office
- Chief Prosecutor, Seoul Central District Prosecutors' Office Investigation ​Department
- Chief Prosecutor, Ministry of Justice Protection Division
- Chief Prosecutor, Ministry of Justice Observation Division
- Chief Prosecutor, Ulsan District Prosecutors' Office Detective No. 2
- Chief Prosecutor, Seoul Central District Prosecutors' Office
- Financial Crime Prosecution - Securities fraud, insider trading, market manipulation cases
- Tax Fraud Prosecution
- Intellectual Property & Trade Secret Violation Prosecution
- Real Estate & Construction Fraud Prosecution
- Seoul National University, School of Law