Devine was born in County Galway in 1970. He has played minor roles in several films. Devine graduated with honours from Trinity College Dublin, where he studied philosophy and sociology. He has since pursued a career of acting in both film and on stage. His credits include numerous stage roles, including various works of Shakespeare. Devine appeared in the rural drama Glenroe during the 1990s as Ray O'Driscoll, who fled the country after he killed his brother Oliver in 1999. This storyline was one of the biggest the show had in the 1990s.