Chief Underwriting Officer Property & Casualty Middle Market, International P&C, XL Insurance. Within XL Insurance he is responsible for establishing and implementing the new Middle Market department within the company’s International P&C unit. Prior to joining XL Insurance in 2008, Mr. Maurer spent nine years as a member of the Senior Management Team of Chubb Europe. Earlier in his career, Mr. Maurer was with the Winterthur Insurance Group for ten years, where he held several senior management positions.