After nearly a decade on the stage, Jo made his film debut as a comedic supporting actor in the 2012 box office hit Architecture 101, which became his breakout role. His versatility was further showcased by the television series The King 2 Hearts (2012), You're the Best, Lee Soon-shin (2013), Oh My Ghost (2015), and Don't Dare to Dream (2016), as well as films The Face Reader (2013), My Love, My Bride (2014) and My Annoying Brother (2016).