Jang Si-young is a professional footballer from KOR and is currently 25 years old. He is on the books of Ulsan HD FC and wears shirt number 33. His main role on the pitch is Forward. His estimated market valuation currently stands at 225K .

His latest transfer saw him join Ulsan HD FC from Bucheon FC 1995 via Loan on 2025-12-31.

During the Korean K League 1 2025 campaign, Jang Si-young made 4 appearances, scoring 0 goals and adding 0 assists. He averaged 0 goals per match from 0 shots, with 0 on target.