In his role as CEO of MSL, Guillaume is responsible for overseeing all MSL entities worldwide. He brings over 25 years of relevant experience to the role, most recently with FleishmanHillard as the company’s global Vice Chairman of Operations, a US-based role that he took up in 2010.
Prior to that Guillaume served as chief operating officer for the firm’s US Eastern and Western regions and Canada regions, having initially joined FleishmanHillard in 1998 and working within the senior echelons of the company’s EMEA operations. Guillaume began his career at PwC, working for the professional services firm in both Paris and New York. He has been a key driver of MSL’s recent innovation – MSL Fluency. MSL Fluency is a global Influencer Marketing service that has rolled out to 35 countries that is in direct response to the growing importance of developing effective and impactful Influencer Marketing strategies for MSL clients.