University of North Texas · Regents Professor

University of North Texas · G. Brint Ryan Endowed Professor

University of North Texas, Information Technology and Decision Sciences · Professor

고려대학교 경영대학 · Fulbright Senior Researcher

경희대학교 · International Scholar

University of North Texas, ITDS · Associate Professor

University of Houston–Clear Lake, Computer Information Systems · Associate Professor

Michigan State University, Telecommunication · Assistant Professor

대외경제정책연구원(KIEP) · Senior Researcher

라온시큐어 팀장

University of Nebraska Omaha, Computer Science Department · Associate Professor

University of Nebraska Omaha, Computer Science Department · Assistant Professor

University of Minnesota, Distributed Computing Systems Group · Research and Teaching Assistant

Samsung SDS · Freelance Software Engineer

Samsung SDS · Software Engineer