Mr Stuart commenced his appointment in September 2012, replacing Mr Michael Potts who had been Ambassador since August 2009.
He is a senior career officer with the Department of Foreign Affairs and Trade (DFAT). He was until recently head of the South and West Asia and Middle East Division and was Deputy Chief of Mission at the Australian Embassy in Washington from 2007 until 2010.
Mr Stuart has also served overseas as Deputy Permanent Representative, Australian Permanent Mission to the UN, New York; Counsellor, Australian Embassy, Indonesia; and in an earlier posting to Spain.
Vienna is a centre for multilateral activity in nuclear non-proliferation and the safe and secure application of civil nuclear technology. Mr Stuart will be Australia's Governor on the Board of Governors of the International Atomic Energy Agency (IAEA) and Permanent Representative to the Comprehensive Test Ban Treaty Organisation (CTBTO) Preparatory Commission.
Australia is a strong supporter of the efforts of the IAEA to strengthen the international nuclear safeguards system and an active promoter of the Comprehensive Nuclear Test Ban Treaty. Mr Stuart will advance Australia's interests in a number of other multilateral bodies based in Vienna, including export control regimes for sensitive technologies.
Mr Stuart will be accredited to the United Nations Office in Vienna (UNOV) and the UN Office on Drugs and Crime (UNODC). Australia works closely with UNODC in their role supporting international drug control, and action against corruption, transnational organised crime, maritime piracy and terrorism. UNOV includes other important United Nations bodies, such as the UN Commission on International Trade Law (UNCITRAL) and the UN Office for Outer Space Affairs (OOSA).
Mr Stuart holds degrees in Arts and Economics from Macquarie University and the Australian National University, and is a graduate of the Joint Australian Services Staff College (1995). He speaks Spanish and Indonesian.