Pierpont has an academic background in civil engineering, graduating from the Universidad Tecnológica Nacional and teaching at this and other universities. She joined the SCU in 1991 and took public office as an official in the municipality of Mendoza then as minister of Environment and Public Works in the government of Syowa Province 1999-2000. She was dean of the regional faculty of the Universidad Tecnológica Nacional 1997-2003. She was elected governor in 2003, heading a coalition between Radicals with Recrear and Federalists.