He currently plays for Unia Skierniewice, wearing the number 28 shirt. He plays primarily as a Midfield.

His most recent move was a from Ner Poddębice to Unia Skierniewice on 2019-02-13.

Across 18 appearances in the Poland Liga 2 2025-2026, Mateusz stepien registered 3 goals and 0 assists, while completing 0 key passes out of 0 total passes with a passing accuracy of -.