S. McMullan is a 22-year-old professional football player from NIR. He currently plays for Waterford United, wearing the number 1 shirt. At the international level, he represents Northern Ireland. He plays primarily as a Goalkeeper. His current market value is estimated at 125K €.

His most recent move was a Loan from Waterford United to Fleetwood Town on 2026-11-30.

In the Ireland Premier Division 2026, S. McMullan played 4 matches, averaging 0 interceptions, 0 tackles, and 0.8 clearances per game.