| 2023-Present |
Lee & Ko |
| 2022-2023 |
Director, Food Safety Risk Assessment Division, National Institute of Food and Drug Safety Evaluation |
| 2019-2022 |
Director, Food Standard Division, Ministry of Food and Drug Safety |
| 2018-2019 |
Director, Pesticide and Veterinary Drug Residues Division, National Institute of Food and Drug Safety Evaluation |
| 2017-2018 |
Food Safety Policy Division, Ministry of Food and Drug Safety |
| 2016-2017 |
Import Food Policy Division, Ministry of Food and Drug Safety |
| 2013-2016 |
Food Standard Division, Ministry of Food and Drug Safety |
| 2012-2013 |
Hazard Substances Analysis Division, Seoul Regional Korea Food & Drug Administration |
| 2009-2012 |
Health Functional Food Policy Division, Ministry of Food and Drug Safety |
| 2006-2009 |
Food Standards Division, Ministry of Food and Drug Safety |
| 2004-2006 |
Food Standards Division, Ministry of Food and Drug Safety |
| 1999-2004 |
Pesticide Residue Division, Ministry of Food and Drug Safety |
| 1997-1999 |
Health Researcher, Gwangju Regional Korea Food & Drug Administration |
| 1996-1997 |
Agricultural Researcher, Chungbuk Rural Development Administration |
| 1994-1995 |
Postdoctoral Researcher, Agricultural Pesticides Research Institute, Rural Development Administration |