He is known for his appearances in films such as Aliens, The Hunt for the BTK Killer, and The Path to 9/11, and in television series such as Law & Order, Orphan Black, and The Expanse.

[citation needed] Kash has appeared in the films Life with Judy Garland: Me and My Shadows, Camp Rock 2: The Final Jam (as Axel Turner), The Hunt for the BTK Killer, Crown Heights, True Confections, Gross Misconduct, Mr. Rock 'n' Roll: The Alan Freed Story, The Path to 9/11, Solo, The Last Days of Patton, Mama and Easy Land.

He has appeared in the TV series Nikita, The Event, The Line, A Taste of Shakespeare, Relic Hunter, Goosebumps, Due South, Law & Order, RoboCop: The Series, Street Legal, The Hitchhiker, Forever Knight, Lifetime's MISSING, Angela's Eyes, Hannibal and Orphan Black.

He also had recurring roles on the FX TV series The Strain (as Everett Barnes), on the Syfy series The Expanse as the villain Dresden, and Bitten as the Alpha Werewolf for the Russian pack, and a main role in Bad Blood as Enzo Cosoleto.

Kash was featured in Ubisoft's 2014 video game Watch Dogs as main antagonist Damien Brenks.