[3] While still in high school, Kremelberg made her television debut in 2006 with roles in an episode of Law & Order: Special Victims Unit on NBC and as a young version of Crystal Chappell's character Olivia Spencer in the CBS soap opera Guiding Light.
[5] In 2018 and 2019, Kremelberg had a recurring role as Nicole Eckelcamp in the fifth and sixth seasons of the Netflix series Orange is the New Black.
[6] She received a Daytime Emmy Award nomination for her performance in the web series The Feels, on which she also has writing credits.
Kremelberg portrayed Bernardine Dohrn in Aaron Sorkin's 2020 film The Trial of the Chicago 7 [7] Also in 2020, she guest starred in an installment of the Hulu horror anthology Monsterland.
Kremelberg joined the main cast of the USA Network series The Sinner as Percy Muldoon for its fourth and final season, which aired in 2021.