Esther Arellano

Esther Arellano is responsible for Mobile Devices, in Access and Devices direction (GCTIO office) at Telefónica S.A., based in Madrid.
Working for almost 26 years at Telefonica, she started at Telefónica Research and Development, developing Network Costs Models in Network Planning area; and then moved to Telefónica S.A., to lead the Corporate Innovation Office and to manage the Network Evolution projects globally.
In 2008, she joined Global CTIO Office as head of Digital Home and Devices first, and as head of Customer Premises’ Equipment later. Since 2016, she has led the Mobile Devices strategy, driving the devices certification process and technical evolution, the SIM card vendors strategy and the vendors ecosystem management, in the Telefonica footprint.
Esther guides the technology definition to ensure 5G devices have the best user experience in Telefónica Networks, considering market evolution and Telefónica corporate priorities, including the platforms that manage devices and those technologies required to deploy services over them.
She is a Telecommunication Engineer by UPM (Madrid Polytechnic University) and Executive MBA by IESE Business School.