By James Hibberd
Updated December 08, 2014 at 05:32 PM EST
Maggie Siff
Credit: AP

A major actress from Sons of Anarchy has found her next gig: Maggie Siff, who played Tara Knowles-Teller for six seasons on the FX hit drama, has joined the cast of Showtime’s promising drama pilot Billions, EW can exclusively report.

Billions stars award winners Paul Giamatti and Damian Lewis as major financial world operatives on a collision course. Giamatti plays a hard-charging U.S. Attorney and Lewis is a ambitious hedge fund king. Neil Burger (Limitless) has signed on to direct the pilot, which will be filmed in New York in early 2015, and its written and executive produced by Brian Koppelman, David Levien and Andrew Ross Sorkin.

Siff will play Wendy Rhoades, the wife of Giamatti’s character. “After graduating at the top of her medical school class and training as a psychiatrist, she is now a highly in demand performance coach who works with some of the most powerful and influential figures in the world of high finance.”

The casting marks Siff’s first role since her run on SoA. She previously had an arc on AMC’s Mad Men and will appear in the upcoming feature film The Fifth Wave opposite Chloe Moretz.

Showtime is locking down its pilot casts, having earlier today announced the cast for its rock tour comedy series Roadies.

Episode Recaps

Sons of Anarchy | ''I watched five seasons of Sons of Anarchy . I resisted for ages because I had no interest in watching a show about a motorcycle…

Sons of Anarchy

Kurt Sutter’s original series, starring Charlie Hunnam, Ron Perlman, and Katey Sagal.

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