He currently plays for Waterford United, wearing the number 19 shirt. At the international level, he represents Northern Ireland U19. He plays primarily as a Forward. His current market value is estimated at 100K €.

His most recent move was a from Fleetwood Town U21 to Waterford United on 2025-01-01.

In the Ireland Premier Division 2026 season, Sam Glenfield scored 0 goals and provided 0 assists across 3 appearances, averaging 0 goals per game with 0 shots attempted and 0 on target.