[3] Bartlett pursued an acting career in Australia for several years, including a role in the series headLand.

In 2000, he relocated to the U.S. His first big break there came a few years later when he was cast as a guest star in the HBO series Sex and the City.

From March 2007 until the show's cancellation in September 2009, Bartlett was a cast member on the CBS daytime soap opera Guiding Light, where he played Cyrus Foley.

[7] Bartlett assumed the central role of Michael 'Mouse' Tolliver in the Netflix revival of Tales of the City.

[8] In 2021, Bartlett starred in The White Lotus as Armond, the luxury resort manager and a recovering drug addict who has been "clean" for 5 years.