Mr Armitage is Ambassador for Counter-Terrorism and Assistant Secretary Counter-Terrorism Branch. He is a senior career officer with the Department of Foreign Affairs and Trade and was most recently Ambassador to Timor-Leste. He has also served as Assistant Secretary Parliamentary and Media Branch and Assistant Secretary Maritime South-East Asia Branch, and in the International Division of the Department of Prime Minister and Cabinet. Overseas, Mr Armitage has served in Manila, New York and Islamabad.
He has a Bachelor of Arts (Honours) degree from the University of Sydney and a Graduate Diploma in Foreign Affairs and Trade from the Australian National University.