Marko Milanovic is widely recognized as a leading international lawyer, with particular expertise in general international law, human rights law, international criminal law and the law of armed conflict. He is Professor of Public International Law at the University of Reading School of Law, Director of the Global Law at Reading (GLAR) research group, and co-general editor of the ongoing Tallinn Manual 3.0 project on the application of international law in cyberspace. He is the Special Adviser on Cyber-Enabled Crimes to the Prosecutor of the International Criminal Court. He is also co-editor of EJIL: Talk!, the blog of the European Journal of International Law, as well as a member of the EJIL’s Editorial Board. 

Professor Milanovic held visiting professorships at Michigan Law School, Columbia Law School, Deakin Law School, the University of Bologna, the University of the Philippines College of Law, Union University Belgrade Faculty of Law, and the Geneva Academy of International Humanitarian Law and Human Rights. His scholarship has been cited by the International Law Commission and by judges of the European Court of Human Rights, the Supreme Court of Canada, the UK Supreme Court, the High Court of England and Wales and the Federal Court of Malaysia. It has also been extensively relied upon by the International Committee of the Red Cross (ICRC) in its updated commentaries on the Geneva Conventions. Professor Milanovic was awarded the Serge Lazareff Prize for excellence in legal services by the NATO Allied Command Operations Office of Legal Affairs. 

Professor Milanovic served as counsel, advisor or as an expert witness in cases before the International Court of Justice, the European Court of Human Rights, arbitral tribunals, and domestic courts of several states. For instance, he was counsel for the Human Rights Law Centre of the University of Nottingham, a third-party intervenor, in the Ukraine and the Netherlands v. Russia interstate proceedings before the Grand Chamber of the European Court of Human Rights, dealing with various aspects of the war in Ukraine, including the 2014 downing of the MH17 airliner.

Professor Milanovic has also frequently engaged in public service work. For example, in 2021-22 he was one of three high-level experts appointed by the UN High Commissioner on Human Rights to assist her in conducting a comprehensive examination of alleged human rights violations committed in Belarus since 1 May 2020, as mandated by the UN Human Rights Council. 

Before his current appointment at Reading, Professor Milanovic was Professor of Public International Law and Co-Director of the Human Rights Law Centre at the University of Nottingham. He served as Vice-President and member of the Executive Board of the European Society of International Law, and as Senior Fellow, NATO Cooperative Cyber Defence Centre of Excellence. Prior to completing his PhD at Cambridge, Professor Milanovic clerked for Judge Thomas Buergenthal of the International Court of Justice.