Ouimet started his professional career in 1980 as a
certified public accountant at
PriceWaterhouse. Ouimet joined The Walt Disney Company in 1989, In 2003, Ouimet was appointed president of
Disneyland Resort. There he prepared for the resort's 50th anniversary celebration and managed the park's restoration after years of maintenance neglect. After leaving Disney, Ouimet joined
Starwood as president of the company's hotel group in 2006. He oversaw global operations for more than 850 hotels in 95 countries. In December 2008, Ouimet became the president and chief operating officer of
Corinthian Colleges, Inc. He announced on October 11, 2010, that he would be leaving Corinthian for personal reasons. Matt Ouimet was a director of Collective Brands, Inc., where he served on the audit and finance committee. In June 2011, Ouimet was named president of
Cedar Fair Entertainment Company. On October 4, 2017, it was announced by Cedar Fair that Ouimet would be stepping down, having Richard A. Zimmerman succeed him. However, it was also announced that Ouimet would take the newly created role of Executive Chairman. Ouimet retired in September 2023. ==Personal life==