1999. Judicial Research and Training Institute
1999. Prosecutor, Gwangju District Prosecutors’ Office
2001. Prosecutor, Cheonan Branch, Daejeon District Prosecutors’ Office
2003. Prosecutor, Uijeongbu Branch, Seoul District Prosecutors’ Office
2005. Prosecutor, Ansan Branch, Suwon District Prosecutors’ Office
2007. Attorney, Yulim
2018. Attorney, Yi-hyun
2018. Partner, CLASS