Career
Born in Rotterdam, Altheer began his career with Feyenoord. Following a two-year loan spell with Excelsior, he left Feyenoord at the end of the 2008-2009 season following the expiry of his contract. He then signed for Helmond Sport in August 2009, on an amateur basis.
He signed a three-year contract with VVV-Venlo in May 2012.