Jen Mazzocco holds a Master of Arts in Teaching from the University of Pittsburgh and has spent 15 years teaching at Allderdice High School, where she also served as President of the Allderdice Staff Association. Mazzocco has been active in the Pittsburgh Federation of Teachers, leading their Political Action Committee and currently serving on the Executive Board. She has served multiple terms on the Dormont Borough Council, where she developed regional active transportation plans and advocated for inclusive policies. Mazzocco has also been involved in community development and volunteer efforts, including the Dormont Free Pantry and Dormont Pride in the Park. She was elected to the Pennsylvania House of Representatives in 2026.

Jen Mazzocco's political identity is marked by a commitment to working families, union rights, and inclusive community policies. She combines progressive economic policies with a focus on local governance, advocating for higher minimum wages and robust social services while simultaneously pushing for transit-oriented development and climate resilience. Mazzocco's approach reveals a unique blend of localism and forward-thinking environmental policies, creating an intriguing tension between progressive economic goals and sustainable urban planning. Her dedication to community presence and education reform further underscores a highly localized, people-centric strategy.