Sinéad graduated from the Gaiety School of Acting advanced performance course in 2011 before going on to join the first year of the Factory Screen Acting Programme (now Bow Street) in 2013 under the Direction of Lance Daly, Kirsten Sheridan, Shimmy Marcus, John Carney, Maureen Hughes and Gerry Grennell.
Sinéad most recently played the role of Briony in A+E series RED ELECTION. Further television credits include the lead role of Aisling Callary opposite Iain Glen in JACK TAYLOR directed by Stuart Orme, the role of Jacinta alongside Aiden Gillen in the RTÉ mini-series CHARLIE, directed by Kenneth Glanaan and Charlie McCarthy and ARTISTS directed by Rachel McElwaine, in which she played the role of Rachel.
Sinéad has also appeared in a number of short films, most recently THE LETTER directed by Kevin O'Farrell, which screened at the Galway Film Fleadh in 2016. Other short film projects include THE AUDITION directed by Allen Doyle, which Sinéad wrote, produced and starred in, A MIND MARRED directed by Karen Connell, HAZARDS directed by Enda O'Connor and THE TRUTH directed by Brian Kirk. She was also cast in the lead role in David Burke's music video LOVE HATE directed by Killian O'Sullivan.
Theatre credits include the role of Elaine in Endnote Production's ANONYMOUS directed by Mark McAuley and the role of Mia in PULP FICTION directed by Shimmy Marcus as part of Culture Night 2013.
Sinéad is based in London.