– 2018-Present: Co-CEO, Clinomics Inc, Korea.
– 2014-Present: Professor, BME, UNIST
– 2009-2014: President & Research Institute Director, Theragen Etex Inc
– 2005-2009: Founder & 1st Director, Korean Bioinformation Center(KOBIC)
– 2003-2005: Associate Professor, Department of Biosystems Engineering, KAIST
– 2001-2003: Group leader, MRC Laboratory of Molecular Biology, University of Cambridge