Stewart-Jones first came on to the television scene in 2003 in HBO’s Sex and the City as Jules. Next he guest starred in 2005 in NBC’s Third Watch. In 2006, Stewart-Jones guest starred on Fox’s The Wedding Album pilot episode. Also in 2006, he guest starred on One Life to Live in a 4 episode arc as an airline pilot.

In 2007, Stewart-Jones began his film career with Montclair and The Girl in the Park. Next Stewart-Jones guest starred on The CW’s Gossip Girl in the pilot episode and the second episode. Stewart-Jones has guest starred on NBC’s Law & Order, 30 Rock, and Mercy.

Stewart-Jones starred in 2013’s Good Television as Ethan Taumer. In 2008, Stewart lent his voice to Midnight Club: Los Angeles’s as Martin.

He guest starred on ABC’s Castle in 2009. Stewart-Jones had minor roles in 2009’s It’s Complicated and The Good Guy.

In 2013, Stewart-Jones guest starred in the pilot episode of The CW’s The Tomorrow People. He next was in 2013’s Dead Man Down. In 2014, Stewart-Jones landed the role of Crispus Allen in Fox’s Gotham as a guest star in the pilot episode. He would be bumped up to a starring role as Crispus Allen in the second episode. In August 2015, it was reported that Stewart-Jones would not be returning as a member of the main cast for season two.