Sebastian Walker is a 21-year-old professional football player from SUI. He plays primarily as a Defender. His preferred foot is Left. His current market value is estimated at 400K €.

His most recent move was a from FC Zurich U21 to FC Zurich on 2026-02-28.

Throughout the Switzerland Super League 2025-2026, Sebastian Walker featured in 7 matches, averaging 1 tackles, 0.4 interceptions, and 0.7 clearances per game, while blocking 0.1 shots per game.