Prior to joining the Capitals, Mahoney was a scout with the Buffalo Sabres and Vancouver Canucks. He has coaching experience with the University of Regina, the Western Hockey League’s Regina Pats and at the international level. He coached Canada’s elite under-17 program in two World Championships. In 1995 he coached Team Saskatchewan to the gold medal at the Canadian Winter Games.
Mahoney earned a degree in education from the University of Regina, where he played hockey for the Cougars. After graduating he spent 17 years as a teacher. Mahoney played junior hockey for the Tier II Regina Pat Blues and the Regina Pats in the WHL. He also played four years at the University of Regina, helping lead his team to two national finals. Mahoney was inducted in the Saskatchewan Sports Hall of Fame in 1999.