Mr. Su-Hyeon Oh is currently an advisor at Shin & Kim, where he primarily provides legal advice on investigations, criminal cases, and general social issues.

Mr. Oh was appointed as a police officer (constable) on January 18, 1992, and served as a police officer for approximately 33 years until his retirement as a superintendent on December 31, 2024, and was recognized for his outstanding abilities in the field of intelligence for approximately 22 years. As a veteran in the intelligence field during his police career, he served as an intelligence officer at the Jongno Police Station, then as an intelligence officer at the Seoul Metropolitan Police Agency, an intelligence officer at the National Police Agency, a foreign affairs officer at the Seongbuk Police Station, an intelligence officer at the Gwangjin Police Station, an intelligence officer at the Seodaemun Police Station, and an intelligence officer at the Jongno Police Station.