Fer started his youth career at the local Zoetermeer club DWO. In his first full season, his team won friendly matches against youth teams from professional sides, like Sparta Rotterdam and Feyenoord. However, he stayed at DWO until age nine. Together with youth friend Kaj Ramsteijn, Fer accepted the invitation to join the Feyenoord's youth academy. He later progressed through the academy and later Jong Feyenoord.
