He is the executive chairperson, and director of EllisDon Corporation, a construction services company founded by his father Don Smith in Ontario.
His father Don, the original President and CEO of EllisDon Corporation, founded the company on April Fool's Day in 1951, with Geoff's uncle, David Ellis Smith.
Smith's mother Joan, a University of Toronto graduate with a degree in philosophy, began her career in public and charitable service before moving on to municipal and provincial politics.
[5] Smith worked in various sectors including project management, field operations, business development, and communications services.
He also served as Vice President for Western Canada,[2][5] and was eventually appointed chief operations officer (COO) in 1989.