Guillaume was appointed CEO Vodafone Investments & Strategy and as a member of the Executive Committee on 15 May 2025. Guillaume brings extensive strategic, operational and leadership experience to the executive team. Before joining Vodafone, Guillaume was the Chief Executive Officer of the Proximus Group, the leading telecommunications operator in Belgium. He began his career in a web start-up, then joined SFR in 2003 where he held various positions in strategy, finance and marketing, until he Joined Canal+ Group in 2015 as Chief Marketing Officer.
