A graduate of Concordia University in Montreal, Quincy has been working in Canadian theatre for 20 years. As an actor, he has worked at several theatres across the country, including two seasons at the Stratford Festival, five seasons at the St. Lawrence Shakespeare Festival, Centaur Theatre, Geordie Productions, Shakespeare by the Sea, Repercussion Theatre and the National Arts Centre, where he was a member of the 2015-16 English Ensemble. Notable appearances include Orsino in Twelfth Night (NAC), George in Intimate Apparel (Centaur) and Michael in The Adventures of a Black Girl in Search of God (NAC/Centaur) in association with Black Theatre Workshop (BTW). He was was the coordinator and an instructor for the YouthWorks training program at BTW in Montreal, and in 2005 became Associate Artistic Director before being named Artistic Director, a position he has held since August 2011.
Nominated for the 2015-16 Meta Award for Best Actor forThe Adventures of a Black Girl in Search of God (Centaur Theatre Company & the National Arts Centre, in association with Black Theatre Workshop).