Monzo founder Tom Blomfield joins Anthropic

This article was published on July 13, 2026 Tom Blomfield, one of the biggest names in UK tech, is leaving Y Combinator to join Anthropic’s compute team. The Monzo and GoCardless founder is an unusual hire for an infrastructure role, and a marker of how far the AI talent war now reaches. Tom Blomfield built two of Britain’s best-known fintech companies. Now the Monzo founder is joining Anthropic, and his job is to help crack the AI industry’s hardest problem: compute. One of the biggest names in UK tech is heading to one of the most valuable companies in AI. Tom Blomfield co-founded the digital bank Monzo and the payments firm GoCardless. On Monday he said he is taking a leave of absence from the startup accelerator Y Combinator to join Anthropic. He announced the move on X. He wrote that he would be working on the compute team alongside Tom Brown, an Anthropic co-founder and its chief compute officer. Blomfield joins as a member of technical staff, the title Anthropic uses for senior hires, as Business Insider first reported. On the surface it is an odd fit. Blomfield’s career is in consumer products and fintech, not data centres. But at Anthropic, compute is no longer just an eng