Cassidy has coached age group, masters swimming and triathletes, with coaching experience in the United States, Canada and Australia. He was most recently head track and field coach at Eastside College Prep, where he had been part of the coaching staff since 2015. He oversaw all aspects of the program, including coaching discus and shot put.

As a professional triathlete and student-athlete, Cassidy represented Canada on the World Cup circuit, racing in 13 countries. He was a three-time, top 20 finisher at Olympic distance world championships. He holds a bachelors from the University of British Columbia and a master’s from Canada’s Ivey School of Business. He recently retired from a career in trading and investment management.