Quincy is known for his role in the 2015 Cannes and Sundance Film Festival, Dope. He was later cast in FOX's hit television series Star, by Lee Daniels. He portrayed Derek Jones until the 2019 series finale.
Quincy captured his audience as one of Hollywood's brightest young creators and was showcased in Netflix's Strong Black Lead campaign, "A Great Day in Hollywood". He was also named in the Top 10 of The Hollywood Reporter's year-end social media for 2018.