2010. 8. ~ 2014. 8.: Director of Environment Management Division, Jeju City

                                     제주시 환경관리과장 

2014. 8. ~ 2016. 7.: Deputy Director, Living Environment Division, Jeju Province

                                                                  제주도  생활환경 담당 

2016. 7. ~ 2017. 7.: Deputy Director, Clean Air Strategy Division,

                                    Ministry of Environment, R.O.K

                                    환경부 청정대기기획과 

2017. 7. ~ Present: Director, Environment Policy Division, Jeju Province

                                     제주도 환경정책과장