Siofra was born in Dublin,Ireland and graduated on Theatre Studies from Ulster University. She was a founding member of Catalyst Arts, Belfast, which remains one of the most cutting edge artist-run organisations in Northern Ireland.
She is currently prepping her second feature as wrier/director with Noomi Rapace, Michael Shannon and Matthias Schweighofer which will shoot in the Netherlands.
Her debut feature as writer/director MARVELLOUS, starring Ewen Bremner,Michael Shannon, Martha Plimpton, Amy Ryan and Annabella Sciorra premiered at the Tribeca Film Festival and was broadcast on the Sundance Channel.
Her pilot GONNA START A RIOT was selected for the Directors UK/Alexa Anamorphic Challenge.
She has written and directed many shorts films include EASTER MONDAY (with Michael Shannon), MEMORIAL DAY (with Brian O Byrne and Amy Ryan) , LOVELESS BASTARD (with Ewen Bremner) and the most recent REFUGE with Nemi Basri and Barry Ward).