2012 – present: Professor, Yonsei University

2018.9 – 2020.8: Chief Professor of Chemistry Graduate Program

2015.3 – 2017.2: Chair, Chemistry Department

2006 – 2012: Associate Professor, Yonsei University

2003 – 2006: Assistant Professor, Yonsei University

2010 – 2011: Visiting Research Scholar, University of California, Irvine

2002 – 2003: Research Associate, Rutgers University

1999 – 2002: Postdoctoral Research Scientist, Columbia University

1998 – 1999: Invited Visiting Scientist, Delft University of Technology

1997 – 1999: Postdoctoral Research Associate, Northwestern University