HOUSTON--(BUSINESS WIRE)--PROS® (NYSE: PRO), a big data software company, today announced Stefan B. Schulz will join the company as its new Executive Vice President and Chief Financial Officer. Schulz is expected to begin in his new role on or before March 16, 2015. He replaces Charles H. Murphy, who, as previously announced in February 2014, is retiring from PROS after 16 years with the company. Schulz will be responsible for PROS finance, accounting, corporate development, information technol