CEO, EMEA at GroupM
Leading GroupM's dominant EMEA media investment operations and championing data-driven, responsible media buying at scale across Europe; widely regarded as one of the UK advertising industry's most senior and influential operators.
Last updated Feb 27, 2026 by AI Enrichment
Josh Krichefski is one of the most influential figures in European media and advertising, serving as CEO of GroupM EMEA — the regional arm of WPP's media investment powerhouse that commands a significant share of all advertising spend across Europe, the Middle East, and Africa. In this role, he oversees a portfolio of major agency brands including Mindshare, Wavemaker, EssenceMediacom, and m/SIX, driving strategy across media buying, programmatic advertising, data and technology, and digital transformation for some of the world's largest advertisers. Krichefski built his career entirely within the GroupM ecosystem, rising over more than two decades to become one of its most senior global leaders. He previously served as CEO of MediaCom UK, one of Britain's largest and most awarded media agencies, where he was widely credited with accelerating its data-driven and digital capabilities. His tenure at MediaCom UK saw the agency win numerous industry accolades and strengthen its position among the UK's top media shops. His deep client relationships and commercial acumen have been central to GroupM's ability to retain and grow major advertiser relationships across the region. Beyond his operational role, Krichefski is a prominent voice on issues including media transparency, responsible advertising, diversity and inclusion in the industry, and the evolving challenges of privacy regulation and identity in a post-cookie world. He has been a consistent advocate for industry standards and ethical media practices, lending his profile to initiatives around mental health awareness in the workplace and broader DE&I efforts within the advertising industry.
MediaCom UK (2016-2021)
MediaCom UK (2013-2016)
MediaCom UK (2010-2013)