In 2013, DiMarco had a leading role in the independent film In the Can, an American Sign Language Films production. In 2014 and 2015, he played the recurring role of Garrett Banducci in Switched at Birth on the Freeform network.
DiMarco was doing freelance modeling for about a year before he was contacted by America's Next Top Model producers in 2015. They scouted him via his social media without realizing he was deaf. He was named the winner of the season after beating out Mamé Adjei in the seas