He is on the books of SC Telstar and wears shirt number 37. His main role on the pitch is Forward. His stronger foot is Right. His estimated market valuation currently stands at 800K €.

His latest transfer saw him join AZ Alkmaar Youth from SC Telstar via Loan on 2026-06-29.

During the Netherlands Eredivisie 2025-2026 campaign, S. van Duijn made 6 appearances, scoring 1 goals and adding 0 assists. He averaged 0.2 goals per match from 4 shots, with 1 on target.