Brendan O’Reilly

Brendan O’Reilly

CTO, O2 (Telefonica UK)

Brendan is Telefónica UK’s Chief Technology Officer, with over 15 years’ experience in Mobile Telecoms. Brendan has accountability for O2’s strategy, design, planning, test, delivery and operation of the entire mobile and fixed network, messaging and wifi supported by his team of more than 600 professional engineers. 

Brendan has held a number of senior roles in the Networks Leadership Team over the past seven years, with achievements including leading the development of O2’s network share partnership with Vodafone in June 2012. He is also experienced in detailed planning and delivery of radio and transmission networks. 

Delivering the best experience to O2’s customers is at the heart of how Brendan works and knows his people are key to achieve this. Brendan also has a strong focus on his people encouraging development and self-learning across all of Networks.