He currently plays for Sieradz, wearing the number 17 shirt. He plays primarily as a Midfield.

His most recent move was a from Zaglebie Sosnowiec to Sieradz on 2025-07-07.

Across 2 appearances in the International Club Friendly 2025, piotr mielczarek registered 0 goals and 0 assists, while completing 0 key passes out of 0 total passes with a passing accuracy of -.