Stidham broke into acting with a starring role in the ABC Family television series Huge. He later auditioned for the part of Sylvester Dodd in the CBS series Scorpion, and was cast in the role after a single audition. From 2014 to 2018, Stidham was a part of the main cast for the entirety of the series.
He also releases music under the name DrTelevision, or DRTV. Additionally, through his production company Stidley Inc., he produces "short form alternative comedy" with Zach Green, including a monthly love comedy radio play Dick Duquesne: Tales of a Private Dick.