A lawyer by training, Mark has enjoyed a rich and varied career. He began his professional career in live music, working with several international acts. He has worked at a national law firm, a national broadcaster and has served as a senior political advisor to a national party leader. He is an entrepreneur and investor in digital health, digital media and real estate. He sits on the Board of the Ontario Media Development Corporation and the University of Toronto's Trudeau Centre for Peace, Conflict and Justice at the Munk School of Global Affairs.
Sakamoto's book, Forgiveness: A Gift from My Grandparents is a #1 national best seller.