Jason began acting at the age of 3 years old when he played The Littlest Prince in a production of The King & I in St. Louis, Missouri. After growing up in a theatre family (his father is actor John Contini) Jason decided to pursue acting in film. In 2003 Jason moved to Los Angeles but moved back to St. Louis a little over a year later. While back in St. Louis, Jason earned his Actor's Equity card doing three consecutive years of children's theatre with The Imaginary Theatre Company, the touring arm of The St. Louis Repertory Theatre. He also worked with Avalon Theatre Company and Stages St. Louis. In the summer of 2008 he moved back to Los Angeles where he now resides.