Born in Los Angeles, California, Britt made his television debut in 2003 appearing in the recurring role of Devon Fox in One Tree Hill. Subsequently, he appeared in TV shows such as Veronica Mars, CSI: Miami, Cold Case and The Vampire Diaries. He has also acted in movies such as the Victor Salva film Peaceful Warrior and in the Twilight parody film Vampires Suck.
In 2014 he was cast as Agent Antoine Triplett in the ABC series Agents of S.H.I.E.L.D. The character was supposed to die in season 1, but was kept through the first half of season 2 where he was killed off. He briefly returned in season 4 as a virtual version of the character when the show's lead cast is sent into a "what if" type of world.
In 2015, he joined the main cast of the second season of Unreal, while in 2016 he plays the recurring role of Will Baker in Pitch.