Arun Sarin joined Pacific Telesis Group in San Francisco in 1984 and has served in many executive positions in his 20 year career in telecommunications.

He was a director of AirTouch from July 1995 and was President and Chief Operating Officer from February 1997 to June 1999. He was Chief Executive Officer for the Vodafone United States and Asia Pacific region until 15 April 2000, when he became a non-executive director. He has served as a director of The Gap, Inc., The Charles Schwab Corporation and Cisco Systems, Inc. and in June 2005 was appointed as a non-executive director to the Court of the Bank of England.