Maddy joined Shelbourne in 2025 having spent three seasons in the Dundalk FC Academy.She was soon given the captaincy of the Reds U19s whereupon she drove the team on to cup success, proudly lifting the U19 FAI Cup. Maddy was also voted WU19 Players’ Player of the Year for her exploits. A former student of Loreto Secondary School in Navan, County Meath, Maddy continued her footballing rise by becoming part of former manager Eoin Wearan’s first team squad.

Maddy’s senior debut came in an All-Island Cup victory over Linfield, and she would go on to make four further first-team appearances in 2025. Maddy came off the bench against Sligo Rovers in August of last year to notch her first senior league appearance. There is no question that Maddy will be aiming to continue her brilliant progression in 2026 and further cement her place amongst the Shelbourne midfield.