Sibel Yildiz - Demirci is a finance professional with extensive experience in financial management and business planning. Since May 2004, Sibel has held various positions at de Viersprong, including Finance Manager, Manager of Business Planning, Senior Business Controller, Business Controller, Assistent Controller, and Mdw. Planning & Control. Prior to this role, Sibel worked as a Bedrijfseconomisch medewerker at GGZ Noord en Midden Limburg from September 2003 to April 2004. Sibel holds a Bachelor's degree in Business Economics from Fontys University of Applied Sciences, obtained between 1999 and 2003.