Since 2010, he has worked as an assistant professor, a GLD director, a head of Research Center on Conflict Resolution and Peaceful Re-Unification of Korea, and a general manager of SSU Faculty Senate. He served as a legal expert of fair election management committee for SSU President. He has also supported East Asian Regional Round (EARR) of Stetson International Environmental Moot Court Competition as a committee member, a judge, and a chief of memorial review board. He also gave lectures to law students at Gachun University College of Law, and Duksung Women’s University Department of Law. Law Courses that he has taught are Criminal Law and Criminal Procedures of Korea, U.S. and Comparative Criminal Law, Criminal Law Clinic, Global Community & International Law, and International Development Cooperation & Law.