Dennis supports businesses and individuals across education, non-profit, and public sector industries. He has helped Fortune 500 companies navigate complex challenges with business strategy. Examples of his previous work include helping a major African telco develop a 10-year profitability strategy, supporting US K-12 institutions improve educational outcomes, and helping a Canadian software startup target specific consumer groups.

Before Preppid, Dennis was a strategy and transformation consultant at EY, supporting its EY-Parthenon team in Toronto and US-Canada cross-border tax team in Vancouver. Dennis has also spent time at Huawei Technologies in Casablanca and Mexico City.