| 2023-Present |
Lee & Ko |
| 2018-2019 |
Commissioner, NTS Jungbu Regional Tax Office |
| 2017-2018 |
Director of Corporate Tax Division, NTS |
| 2015-2017 |
Director of Tax Investigation Division, NTS Seoul Regional Office |
| 2014-2015 |
Director of Tax Investigation Division, NTS Busan Regional Office |
| 2013-2014 |
Tax officer, Consulate General of New York |
| 2012-2013 |
Section Chief of Consumption Tax Division, NTS |
| 2009 |
Section Chief of Tax Investigation Division, NTS Seoul Regional Office |
| 2007-2008 |
Director of Gyeongsan Tax Office |
| 2000-2002 |
Officer of Investigation Division, NTS Seoul Regional Office |
| 1997-2000 |
Officer of Tax Office, Ministry of Strategy and Finance |
| 1996-1997 |
Section Chief of Property Tax Division, Gimpo Tax Office |
| 1995-1996 |
Section Chief of Income Tax Division, Jinju Tax Office |