| 2018-Present |
Lee & Ko |
| 2016-2018 |
Comptroller and Auditor General, Korea Electric Power Corporation |
| 2013-2014 |
The 18th Commissioner General of KNPA |
| 2012-2013 |
The 22nd Director of Busan Metropolitan Police Agency |
| 2011-2012 |
The 25th Director of Chungbuk Provincial Police Bureau |
| 2010-2011 |
Director of Foreign Affairs Bureau of KNPA |
| 2010 |
Director of Audit and Inspection Bureau of KNPA |
| 2009 |
Director of Innovation Planning Team of KNPA |
| 2006-2009 |
Police Attaché at the Korean Embassy Washington, DC, U.S.A. |
| 2006 |
The Deputy Director of the Gyeonbuk Provincial Police Bureau |
| 2004-2006 |
Secretary of Public Security Affairs, Office of the President |
| 2003-2004 |
The 7th Chief of Sudeo Police Station |
| 2003 |
Chief of White Collar Crime Investigation Team of KNPA |
| 2002-2003 |
Chief of Forensic Science Team of KNPA |
| 2002 |
Chief of Traffic Division, Gyeonggi Provincial Police Bureau |
| 2001 |
The 38th Chief of Taebaek Police Station |
| 2000 |
Chief of Informatization Team of KNPA |
| 1999 |
The 50th Chief of Geochang Police Station |