 He played in hometown's Polonia Warsaw's youth setup, but left the club in 2005 and subsequently joined Korona Kielce.Wilk played his first match as a professional on 15 October 2005, aged 19, and eventually represented his side for five years, playing 74 official games and scoring five goals.In 2007, he was loaned to ŁKS Łódź, appearing in 14 matches during his six-month spell.