Marion Sandilands practices civil litigation, constitutional and administrative law at Conway Litigation in Ottawa. She has appeared before multiple courts including the Supreme Court of Canada. After her call to the bar, she served as a law clerk to the Hon. Yves De Montigny (now Chief Justice of the Federal Court of Appeal) and the Hon. Andromache Karakatsanis at the Supreme Court of Canada. She teaches Constitutional Law at the University of Ottawa. She speaks and has published on matters of constitutional, public, and administrative law. He has provided expert comments on constitutional issues for the David Asper Centre for Constitutional Rights at the University of Toronto, the Centre for Constitutional Studies at the University of Alberta, and for the Toronto Star and Global News. She serves on the board of directors of the International Commission of Jurists (Canada) and Belong Ottawa.