-1997 ~ 1999 : KATRI (Korea apparel test and research institute)
– 2000 ~ 2001 : Green Cross
– 2001 ~ Present : HK inno-N. (old CJ Healthcare)
* 2001 ~ 2010 Quality Assurance Team
* 2010 ~ 2015 Technical development Team
* 2015 ~ 2017 Quality Manager
* 2017 ~ 2019 Project TF team (Head office) for New Plan & Bio Project
* 2019 ~ 2022 Quality Unit Manager (Cell and Gene Therapy Plant
* 2022 ~ Manufacturing2 Team Manager (LVP)