After a few years in Chicago, where he graduated from Lake Forest College, Mathieu moved to Toronto where he founded a technology company with his former class partners. He returned in 2008 to take on a sales representative position at Chomedey Hyundai, a job he had previously held during his school holidays. In no time, he took the head of the used department and put his expertise in digital media for the benefit of the dealership and the entire group. He became Managing Director of Chomedey Hyundai in 2010. During this period, he also founded the Trade Helper inter-dealer digital auction platform, used by more than 3,200 users and generating more than 18,000 sales per year. Mathieu has been a member of the CCAM's executive committee since 2014 and this year occupies the seat of vice-president. He is also a partner of Pie-IX Chrysler and Honda de Blainville.