Before joining POSTECH, he worked at UNIST (Ulsan National Instittue of Science and Technology) as an Assistant/Associate Professor for 6 years. Hw also worked at SNUT (Seoul National University of Technology) as a research professor. He also stayed at the Information Systems (IS) department of the Technology Management (TM) of Eindhoven University of Technology (TU/e) as a postdoctoral researcher from Feb. 2006 until Aug. 2009. He was also a member of the research school Beta at TU/e. His research focuses are BPM and process mining. Special areas of research are process mining in healthcare industry and manufacturing process analysis. Currently, he is involved in several research projects with industry partners such as Hyundai Heavy Industries, SNU Budang Haspital, etc.