2006-Present : Professor, Department of Chemistry and Nano Science, Ewha Womans University.
2011-2020 : Director, NanoBio Institute, Ewha Womans University.
2011-2014 : Director, Institute of Basic Science, Ewha Womans University.
2012-2014 : Director, Seoul Branch, Korea Basic Science Institute.  
1994-2005 : Senior and Principal Research Scientist, Korea Institute of Science and Technology.
2003-2005 : Head of Medicinal Research Center, Korea Institute of Science and Technology.
1997-1998 : Post.doc, Massachusetts Institute of Technology (Supervisor: John Essigmann), Cambridge, MA.
1990-1994 : Ph.D, University of Missouri-Columbia, Department of Chemistry (Advisor: William H. Bunnelle) 
1985-1990 : Research Scientist, Korea Institute of Science and Technology.
1983-1985 : MS, Korea Advanced Institute of Science and Technology, Department of Chemistry.
1978-1982 : BE, Kyungpook National University, Department of Applied Chemistry.

Awards
2019 : Academic Awards in the 20th Korean Society of Organic Synthesis
2012 : Lectureship Awards (from Thailand and China) in the 7th International Conference on Cutting-Edge Chemistry in Asia, held in Singapore, 11-14, December 2012.
2005 : Chang Sae Hee Academic Award, Organic Chemistry Division, Korean Chemical Society.

Community Activities
2020-2022 : Editorial Advisory Board Member in ACS Catalysis.
2017-2018 : President in Organic Division in the Korean Chemical Society.
2015-2016 : Executive Vice President in The Korean Chemical Society.
2011 : Organizer and Section Chair in 2010 International Chemical Congress of Pacific Basin Societies (PACIFIC), Honolulu, Hawai, USA.
2011-2013 : Vice President, The Korean Society of Organic Synthesis
2007 : Vice President, The Korean Chemical Society
2006 : Secretary of the Organic Division, The Korean Chemical Society
2003 : Secretary of Science Affair, The Korean Chemical Society