[2][4] Kolker made her acting debut in 2015, in an episode on the crime drama television series Criminal Minds.

[5] In 2016, she appeared in the independent action film Female Fight Squad,[6] and in the same year received recognition for playing Mary Swagger, the daughter of Bob Lee Swagger on the action television series Shooter, which was a recurring role that she held throughout the entirety of the show's run.

[12] Variety magazine wrote that "relative newcomer Kolker carries the film effortlessly.

"[13] Justin Lowe of The Hollywood Reporter stated that her "semi-improvised performance couldn't be any more authentic",[14] and Collider described her acting as "truly unforgettable work".

[18][19] In 2019, she appeared in the independent mystery crime film The Case of Jonas Booker as Marley.