University of Illinois at Urbana-Champaign, M.S. Civil Engineering, Construction Management

 Professor (2020.04 - Present), Department of Civil Engineering, Seoul National University of Science and Technology

 Associate Professor (2014.03 - 2020.03), Department of Civil Engineering, Seoul National University of Science and Technology

 Visiting Scholar (2015.09 – 2016.08), University of Chicago Computation Institute, Urban CCD

 Assistant Professor (2012.03 – 2014.02), Department of Civil Engineering and Design, Seoul National University of Science and Technology

 Assistant Professor (2009. 03 - 2012.02), Department of Civil Engineering, Seoul National University of Science and Technology

 Researcher (2006. 01 - 2009. 02), Construction and Economy Research Institute of Korea (CERIK)

 Consultant (2004. 01 - 2005. 09), Strategic Project Solutions, Inc.

 Researcher (2002. 07 - 2002. 12), Intel Corporation

 Research Assistant (2001. 07 - 2001. 12), University of Applied Science, Aargau 

 Class and Research Assistant (1998. 09 - 2003. 12), Stanford University