Guillaume Soumillon

Senior Client Director - Enterprise Advisory

With 25+ years of experience in Complex Solutions Selling to C-Level executives across EMEA, Guillaume is a seasoned sales professional who has worked for large IT software editors, consulting companies, and is a former Gartner Senior Sales Executive.

Prior to joining HFS Research, Guillaume occupied various Sales positions either as an individual contributor, Chief Revenue Officer, and Sales Director, where he developed a strong command of all facets of business development and revenue management, spanning both on strategic and execution. Known for his empathy, Guillaume is motivated by building solid, trust-based relationships with clients.

On a personal note, Guillaume holds dual Swiss and French citizenship, is married to Anne-Marie, and is the proud father of Constance, who's turning 10 this summer. He's passionate about world travel and cooking, and wrongly believes he is a good tennis player.

Guillaume Soumillon HFS Headshot

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