Judith trained at the Samuel Beckett Theatre at Trinity College, Dublin. Since graduating, Judith has had an extensive stage career working with Irelands leading theatre companies including, The Abbey Theatre, The Gate Theatre, Storytellers Theatre and Project Arts Centre.

Recent theatre credits include The Plough and The Stars and The Silver Tassie (National Theatre, London), Pentecost (The Lyric Theatre Belfast), Playing the Dane (Pan Pan Theatre) and Conversations on a Homecoming (Druid Theatre/National Tour).