After almost 13 years with the United Nations and an affiliated international criminal tribunal, TJ returned to Canada in March 2024 to join the Department of Justice. During postings in the Middle East, Africa and Europe, TJ prosecuted and/or investigated cases involving war crimes, crimes against humanity, genocide and terrorism. He advised senior officials on matters of international criminal law, international humanitarian law (law of armed conflict), international human rights law and public international law.
TJ’s previous roles included being the Legal Advisor for the UN Commission of Inquiry on Ukraine, Head of a Field Investigation Unit for the UN Investigative Team to Promote Accountability for Crimes Committed by Da’esh/ISIL, Trial Counsel with the Office of the Prosecutor (OTP) at the Special Tribunal for Lebanon, and Appeals Counsel with the OTP at the UN International Criminal Tribunal for Rwanda.
TJ has taught International Criminal Law and a seminar on Building Transnational Cases Using New Technologies at Osgoode, and provided guest lectures at other Canadian law schools. He is on the Board of Directors of the Canadian Council on International Law and is an officer of the International Law Section at the Canadian Bar Association. TJ is a former Co-Chair of the War Crimes Committee at the International Bar Association and Past Chair of the International Law Section at the Ontario Bar Association.