She was formerly the head of English language services at the Canadian Broadcasting Corporation, vice-president of media at Twitter, and chief revenue officer of Tribalscale.

[2] Stewart is married to Zaib Shaikh, the former star of Little Mosque and the current consul general of Canada in Los Angeles.

Stewart first became prominent as head of programming for Alliance Atlantis cable channels, including HGTV, Food Network, National Geographic and BBC Canada.

[5] Her tenure with CBC Television was noted for popular series such as Little Mosque on the Prairie, Dragons' Den, The Tudors, Battle of the Blades, Murdoch Mysteries and Being Erica, which revived the network's primetime ratings after a number of years of decline.

[citation needed] On September 20, 2016, Stewart left her position at Twitter to join the content publisher Diply as their chief strategy officer.