He is on the books of Banik Ostrava Women and wears shirt number 16. At international level, he features for Czechia Republic U17 Women. His main role on the pitch is Defender.

Across the Czech Cambrinus Women's Liga 2025-2026, Karolina krupnikova appeared in 11 matches and averaged 0 tackles, 0 interceptions, 0 clearances, and 0 blocked shots per game.