Chris Mairs is a Venture Partner at Entrepreneur First (EF), a London-based talent investor. See portfolio, sector focus and contact routes.
Chris Mairs is a Venture Partner at Entrepreneur First (EF), a London-based talent investor, and a former co-founder and Chief Technical Officer of Metaswitch Networks, which was acquired by Microsoft in 2020 [2][4]. He primarily invests in early-stage deep tech companies, focusing on pre-seed and seed rounds with a strong geographic concentration in the United Kingdom and thematic emphasis on software, machine learning, and financial services [2]. His typical check size ranges from $50,000 to $400,000, and he generally participates as a follow investor rather than leading rounds [2]. Notable portfolio companies include Synthesia, an AI video generation platform, and Wayve, which develops AI for autonomous vehicles [2]. Mairs has backed more than 21 startups and serves as a board member at Raspberry Pi and chair at peace.com [2][4]. As a blind engineer awarded a CBE in 2014, he is a patron of sight-loss charities and author of “The Open Eyed Man,” a weekly publication examining AI’s impact on daily life [4][6].
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