Mark was born and raised in Yellowknife. He holds a Bachelor of Arts Degree in History from McGill University in Montreal, and worked at the Prince of Wales Northern Heritage Centre as the Website and Multimedia Coordinator from 2000 to 2012.
Mark served three terms on Yellowknife City Council from 2003 to 2012, was Deputy Mayor from 2006 to 2012, and was elected Mayor in 2012 and re-elected in 2015. During his time on Council, Mark chaired the City’s Heritage Committee and Community Energy Planning Committee. From 2007 to 2017, Mark served as a member of the Federation of Canadian Municipalities’ Green Municipal Fund Council. He was also on the Board of Directors for the NWT Association of Communities, representing Cities, Towns and Villages of the Northwest Territories. Mark joined the Arctic Energy Alliance as Executive Director in the fall of 2018.