Studied to become auditor, Nederlands Institut voor Registeraccountants, Amsterdam. Concurrently, worked as an independent tax auditor for the Dutch Ministry of Finance. 1985, became Audit Supervisor, KPMG, Eindhoven, Netherlands. 1990-2002, senior international finance and accounting positions in the packaging industry, Schmalbach-Lubeca, Ratingen, Germany. January 2003, joined the RWE Group as Head of Group Controlling, RWE; 2004, became Member of the Executive Board, RWE Umwelt; was significantly involved in restructuring and selling RWE Umwelt; July 2005, appointed Chief Executive Officer, RWE Trading; responsibilities included the merger of RWE Trading and RWE Gas Midstream into RWE Supply & Trading; significant contribution to the realization of RWE's growth strategy; as of 2009, took responsibility for the integration process of Essent; until December 2011, Chief Executive Officer, RWE's Dutch subsidiary; September 2011, appointed Member of the Executive Board and Deputy Chairman of the Board, RWE; since July 2012, Chief Executive Officer, RWE.