He plays primarily as a Goalkeeper. His preferred foot is Right. His current market value is estimated at 300K €.

His most recent move was a Loan from Loko Vltavin to Sparta Praha B on 2026-06-29.

In the UEFA European U19 Football Championship 2025-2026, Sebastian zajac played 3 matches, averaging 0 interceptions, 0 tackles, and 0 clearances per game.