- Professor of Constitutional Law, The University of Queensland
He is also a Fellow of the Centre for Public, International and Comparative Law, a Research Fellow of Emmanuel College at The University of Queensland, a Fellow of the Centre for Law and Religion at Emory University and an External Member of the Islam, Law and Modernity research program at Durham University. He has held visiting positions at Oxford, Cambridge, Edinburgh, Sydney, Emory and Tilburg universities, a Visiting Professor at the University of Paris II (Panthéon-Assas), and a Visiting Fellow of the Institute of Advanced Study at Durham University. He has published over 100 books, journal articles and book chapters in the fields of constitutional law, comparative constitutional law and legal theory. His publications in these fields include: The Constitution of a Federal Commonwealth: The Making and Meaning of the Australian Constitution (Cambridge University Press, 2009), Shari'a in the West (Oxford University Press, 2010) (edited with Rex Ahdar), The Future of Australian Federalism (Cambridge University Press, 2012) (edited with Gabrielle Appleby and Thomas John), The Constitution of the Commonwealth of Australia: History, Principle and Interpretation (Cambridge University Press, 2015) (with Peter Gerangelos, James Stellios and Sarah Murray) and Courts in Federal Countries (Toronto University Press, 2017) (edited with John Kincaid). He has made numerous submissions to government inquiries.
Current research projects: