A graphic designer and Professor Emeritus at Seoul National University, he is the Honorary President of the Korean Federation of Design Organizations. Throughout his illustrious career, he has held numerous influential positions in the field of design: Jury Member for the Asia Digital Art and Design Awards (2001–2007), Honorary Doctorate in Design from Dongseo University (2001), International Jury Member for Hong Kong Design Show 98 (1998), Founding President of the Korea Society of Visual Information Design (1996), Dean of the Graduate School of Design at Dongseo University (1986–1989), Dean of the College of Fine Arts at Seoul National University (1984–1987), President of the Korean Society of Visual Design (1980–1983, 1972-1975). He also served as an international jury member for the Morisawa International Typeface Design Competition, making significant contributions to both Korean and global design communities.