Kim Jae-Sung is a professional footballer from KOR and is currently 27 years old. At international level, he features for South Korea U21. His main role on the pitch is SUB. He measures 178cm in height and weighs 72kg. His estimated market valuation currently stands at 175K .

His latest transfer saw him join Suwon Football Club from Seoul Jungnang Youth via Loan on 2027-12-30.