Ian worked for nearly 20 years at very senior levels of the Australian public service. His most recent appointment was as Secretary of the Department of Prime Minister and Cabinet and head of the Australian Public Service, a position he held from 2011 to 2014. Before that, he was Secretary of the Departments of Defence, Finance, and Communications, Information Technology and the Arts between 2001 and 2011. Before that, Ian was Deputy Secretary of the Department of the Prime Minister and Cabinet.
Ian is currently chair of the International Centre for Democratic Partnerships, the ADC Advisory Council, and the Australian Governance and Ethical Index Fund Advisory Board. Ian is also on the Board of Citibank Pty Ltd, the Grattan Institution, EnviroPacific Services Pty Ltd, the Committee for Economic Development, and a Member of the Council of the Australian National Maritime Museum. He is a Senior Advisor to Flagstaff Partners.