64. Brendan O'Rourke

Key points

CIO UK, Telefonica

With 27 years experience in the telecommunications and information technology industries, O'Rourke has been CIO at European telecom firm Telefonica O2's UK operations since May 2013. Responsible for a team of 400 technologists, O'Rourke puts an emphasis on keeping knowledge and experience within his core team. As part of the Global CIO team, he is also responsible for implementation of global IT strategy and accountable for key business KPIs around efficiency and simplification.