[3] De Kat firstly played as a professional footballer for SC Heerenveen.
[4] After ending his playing career, De Kat moved toward coaching, with him earning a CIOS-diploma in Heerenveen and studying at The Hague's Academy of Physical Education.
Two years later he attained his UEFA Pro professional football coaching license.
De Kat eventually moved on to Willem II where he was named as the club's Head of Scouting and a consultant to their Academy.
[6] In July 2010 De Kat was appointed as the technical consultant at club RKDEO, a post which he held for another 18 months .