 De Roon was born in Zwijndrecht and raised in Hendrik-Ido-Ambacht, where he played in youth teams of ASWH.From ASWH, he continued to youth teams of Feyenoord and Sparta Rotterdam.De Roon made his Eredivisie debut for Sparta Rotterdam on 27 March 2010, starting in the match against Twente at De Grolsch Veste.