- Gangnam Severance Hospital resident
- Research assistant professor, Yonsei University Institute of Medical Behavioral Sciences
- Professor, Catholic Kwandong University School of Medicine
- Director, Department of Psychiatry, Catholic Kwandong University International St. Mary's Hospital
- Visiting Professor, Fralin Biomedical Research Institute of Virginia Tech Carilion, Center for Human Neuroscience Research, Montague Lab
- Professor at Catholic Kwandong University International St. Mary's Hospital
- Executive Director, Korean Schizophrenia Society
- Member of Society for Neuroscience
- Member of Schizophrenia International Research Society
- Lifetime member of the Korean Psychopharmacological Society
- Member of the Korean Brain Function Mapping Society
- Member of the Korean Neuropsychiatric Association
