Christie is a member of Miller Thomson's Commercial Litigation Group, and focuses on environmental, Aboriginal, administrative, and other litigation matters.

Christie joined Miller Thomson as a student in 2019 and concluded her articles in 2021. She completed the joint JD/Masters in Environmental Studies program at Osgoode Hall Law School and York University, with the latter focusing on Canadian climate accountability. During her education, Christie also worked with Human Rights Watch in New York City and Toronto to research the impact of climate change on food security in Indigenous communities in Canada, and with West Coast Environmental Law as a summer student and legal researcher.