Epsilon Appoints Matt Simpson as Chief International Officer

Epsilon has appointed Matt Simpson as its Chief International Officer, creating a new leadership position focused on expanding the company's data, identity, media and technology solutions across international markets.

Based in London, Simpson will work closely with Epsilon and Publicis Groupe's regional and market leaders to strengthen the company's international presence and improve the integration of its offerings across different markets. He will report directly to Epsilon CEO Sean Reardon.

Simpson joins Epsilon from Omnicom Media Group, where he served as Executive Vice President and Chief Digital Operations Officer. He brings more than 25 years of experience helping large marketing organizations adapt to digital disruption and develop scalable commercial operating models.

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Throughout his career, he has led initiatives involving digital media planning and buying, regional capability integration, global performance marketing, and commerce propositions. More recently, his work has focused on scaling technology-led products and operating models, including the use of artificial intelligence in media activation and optimization.

In his new role, Simpson will lead a prioritized international roadmap for Epsilon's solutions while supporting stronger commercial and operational collaboration across Publicis Groupe entities and local agency teams.

The appointment comes as marketing organizations increasingly look to connect data, identity, and media capabilities across markets. For Epsilon, the new role represents a move to coordinate its international strategy and make its technology and data offerings more accessible to clients globally.