– 2003 ~ 2004: Research Scientist, Institute of Pharmaceutical Sciences, Seoul National University
– 2005 ~ 2009: Postdoctoral Fellow, Department of Immunology, MD Anderson Cancer Center, USA
– 2010 ~ 2014: Assistant professor (tenure track), Institute of Molecular Medicine, The University of Texas-Medical School at Houston, USA
– 2014 ~ 2020: Adjunct professor, Institute of Molecular Medicine, The University of
– 2014~present: Assistant/Associate/Full professor, College of Pharmacy, Seoul National University
– 2024~present: Program Director of Innovative Pharmaceutical Sciences, School of Transdisciplinary Innovations, Seoul National University