Kim Jae-Sung is a 27-year-old professional football player from KOR. At the international level, he represents South Korea U21. He plays primarily as a SUB. He stands at 178cm tall and weighs 72kg. His current market value is estimated at 175K .

His most recent move was a Loan from Seoul Jungnang Youth to Suwon Football Club on 2027-12-31.