An expert in Water Resources, Environmental, and Sustainability Engineering with extensive experience. Served as a full professor at KAIST (1995-2022), teaching undergraduate and graduate courses, supervising 22 PhD and 41 master’s graduates. Research focuses on integrated water management, green urban infrastructure, and hydrodynamic modeling. Previously an engineer at Harza Environmental Services (1990-1995), involved in major water projects like Chicago’s TARP. Holds a PhD from the University of Illinois Urbana-Champaign, master’s and bachelor’s from Seoul National University. Registered Professional Engineer in Illinois, founded a startup, and participated in international water projects via KOICA.