Kristo Käärmann
An Estonian computer scientist and former consultant, Käärmann studied at the University of Tartu before joining Deloitte as an auditor and later moving into financial roles at Skype. The frustration that sparked Wise was personal: while working in London, he noticed banks were charging hidden FX markups on cross-border transfers — a problem he shared with his future co-founder, Taavet Hinrikus, who was being paid in euros while living in London. That shared pain point led to the founding of Wise in 2011, built around transparent, mid-market exchange rates and low, upfront fees. Käärmann is known for running a lean, metrics-obsessed operation and has publicly emphasised that Wise's mission is to make the existing financial system obsolete, not to partner with it.

