Jang Si-young is a 24-year-old professional football player from KOR. He currently plays for Ulsan HD FC, wearing the number 28 shirt. He plays primarily as a Forward. His current market value is estimated at 225K .

His most recent move was a Loan from Bucheon FC 1995 to Ulsan HD FC on 2025-12-31.

In the Korean K League 1 2025 season, Jang Si-young scored 0 goals and provided 0 assists across 4 appearances, averaging 0 goals per game with 0 shots attempted and 0 on target.