Brim was born in Ukraine and moved to the United States after being adopted in 2003.

[2] Brim made her international debut for the United States at the 2022 UCI Para-cycling Road World Championships and won gold medals in the road race H2 and time trial H2 events.

[3][2] On May 23, 2023, she accepted a one-year suspension for a banned substance from the United States Anti-Doping Agency after the World Anti-Doping Agency denied her a retroactive therapeutic use exemption.

[4][5] In November 2023, she represented the United States at the 2023 Parapan American Games and won a gold medal in the road time trial H1–5 and a silver medal in the road race H2–5 event.

[6][7] On July 8, 2024, Brim qualified to represent the United States at the 2024 Summer Paralympics.