Maher first came to hurling prominence as a member of the Castlecomer Community School team that won the Leinster Colleges Championship in 2007.
Maher first appeared on the inter-county scene as a member of the Kilkenny minor hurling team that beat Galway in the 2008 All-Ireland minor final before later captaining the team in his second and final season.
[2] Maher was also a member of the extended panel of the Kilkenny under-21 hurling team that lost out to Clare in the 2012 All-Ireland under-21 final, having earlier lined out for the senior team in the 2011 Walsh Cup.
[3] After transferring to the St Jude's club, Maher also earned selection to the Dublin senior hurling team.
[5] Maher was part of the East Cavan Gaels team that beat Cootehill Celtic to win the Cavan SHC title in 2024.