Ms Sidhu is a career officer with the Department of Foreign Affairs and Trade. Her most recent role was as head of the Multilateral Policy Division of the Department of Foreign Affairs and Trade. There, she was responsible for relationships with the UN and UN agencies, the UN Security Council and the Commonwealth, as well as for issues such as human rights, climate change and people smuggling.
Ms Sidhu has held several senior roles in government, most recently as a Division Head in the Department of Climate Change (2008 – 2013). Ms Sidhu was Assistant Director-General in the Office of National Assessments from 2004. Between 1999 and 2004, she worked in senior economic and defence adviser roles in the Department of the Prime Minister and Cabinet. Ms Sidhu began her career as a diplomat with the Department of Foreign Affairs and Trade, where she was posted to Cairo, Damascus and Moscow. She holds degrees in Economics and Law from the University of Sydney.