On 20 January 2007, De Ceulaer played his first
Eredivisie match with
RKC Waalwijk against
FC Twente. In the play-offs for a ticket to the
Eredivisie he scored the winning goal in the third match against
De Graafschap. On 13 July 2010, he signed for
K.S.C. Lokeren Oost-Vlaanderen leaving RKC. In February 2012, he received his first call-up to the senior national team of his country for a
friendly match against Greece. ==Honours==