- Severance Hospital Pediatric Psychiatry Instructor
- Clinical Research Assistant Professor, Department of Child Psychiatry, Severance Hospital
- Assistant Professor, Department of Psychiatry, Konyang University School of Medicine
- Department of Adolescent Psychiatry, Seoul National Hospital
- Technical Secretary, Department of Adolescent Psychiatry, Seoul National Hospital
- Director of Training Education Department, International St. Mary's Hospital, Catholic Kwandong University
- Associate Professor, Catholic Kwandong University International St. Mary's Hospital
