Dr. Jang is currently Senior Senior Research Fellow of STEPI. He served as Secretary for the President for Science & Technology at Blue House in 2013. He worked for National Science & Technology Commission as Director General of Department of Science and Technology Policy (2011-2013) and served as Vice President of STEPI (2010-2011) and Research Fellow of STEPI (1992-2009)

He was a Director of New Growth Engines Research Center for two years since 2008 and Techno-Economics Research Center for one year since 2007 in STEPI

He also was a Committee member on Strategy for Environmental Technology Development, Ministry of Environment (2011-2012) as well as an Advisory Committee member on National Biological Resources (2011-2012)

He received degrees in Economics from State University of New York with Ph.D. (1992), M.A. (1988). He holds B.A. Economics at Seoul National University (1985).