He is on the books of Olimpia Grudziadz and wears shirt number 16. His main role on the pitch is Midfield. His stronger foot is Both.

His latest transfer saw him join Olimpia Grudziadz from GKS Jastrzebie via on 2025-06-30.

Over 2 appearances in the Polish Cup 2025-2026, karol fietz contributed 0 goals and 0 assists, completed 0 key passes from 0 total passes, and posted a passing accuracy of -.