Simpson was named head coach of the Swiss national team prior to the 2010 World Championships and remained in that job until 2014. At the 2010 World Championships, Simpson's team defeated Canada in the preliminary round and made it to the quarterfinals, before falling short to host Germany. In 2011 and 2012, the Swiss team failed to qualify for the quarterfinals at the World Championships. In 2013, Simpson led the Swiss national team to its greatest ever success, a silver medal at the World Championships in Sweden. At the 2014 Olympic Games, Simpson's squad missed the quarterfinals and finished in ninth place.
