YouTube/Screenshot Marc O'Brien has been named the CEO of startup Crypterium. O'Brien was the CEO of Visa UK & Ireland from 2008 to 2014. Crypterium raised $52 million through an ICO and wants to build tech to make it easy to spend cryptocurrency in everyday situations. LONDON — The former CEO of Visa in the UK and Ireland has joined a new cryptocurrency startup that hopes to make spending crypto an everyday occurrence. Marc O'Brien, who led Visa UK & Ireland from 2008 and 2014, has joined Crypterium as CEO.