- Civil/ Criminal Litigation
- Corporate Law
- Disputes Related to Real Estate and Financial Transactions
- Labor Disputes

- Korea University, College of Law (LL.B.)
-Santa Clara University (Visiting Scholar)
- Judicial Research and Training Institute of the Supreme Court of Korea
- Prosecutor, Northern Branch, Seoul District Prosecutors' Office
- Prosecutor, Ulsan Branch, Pusan District Prosecutors’ office
- Prosecutor, Legal Affairs Department, Ministry of Justice
- Prosecutor, Seoul District Prosecutors’ Office
- Prosecutor Exchange Program (PEP), Korean Institute of Criminology
- Prosecutor, Suwon District Prosecutor’s office
- Professor, Legal Research and Training Institute.
- Senior Prosecutor, Gyeongju Branch, Daegu District Prosecutors’ Office
- Senior Prosecutor, Cheongju District Prosecutors' Office
- Senior Prosecutor, Ulsan District Prosecutors' Office
- Senior Prosecutor, Incheon District Prosecutors' Office
- Senior Prosecutor, Suwon District Prosecutors' Office
- Head, Inspection Department I, Supreme Prosecutors’ Office
- Chief Prosecutor, Chungju Branch, Cheongju District Prosecutors' Office
- Deputy Chief Prosecutor, Bucheon Branch, Incheon District Prosecutors' Office
- Researcher, Legal Research and Training Institute
- Prosecutor, Seoul High Public Prosecutors’ Office

- Study on Economic Crimes Investigation and its
Countermeasures
- Study on Public Attitude for the Rule of Law
- Method of the Establishment of the Rule of Law