In May 2020, Voloder signed his first professional contract with 1. FC Köln that would keep him at the club until 2023.[4] In June 2021, he was sent on loan to Slovenian PrvaLiga side Maribor.[5] On 18 July 2021, Voloder made his professional debut in a PrvaLiga match against Celje.[6] He featured in all 20 league matches in the first half of the season,[7] before Maribor activated the possibility of making the transfer permanent in December 2021.[8]