By Joshua Burd
A veteran engineer has rejoined PS&S, where she will serve as a senior vice president with a focus on infrastructure and site development projects.

In a news release, the Warren-based firm said Lisa A. DiGerolamo returns after a tenure that stretched from 1996 to 2021, during which she rose to the level of vice president. She most recently was a senior project manager and senior associate with engineering firms in Pennsylvania and New Jersey, with experience that includes education, residential, municipal, recreational, warehouse, industrial, corporate campus and retail developments.
“As we embark on a new growth phase, we are very pleased that Lisa DiGerolamo has decided to rejoin the firm,” CEO and President John Sartor said. “Lisa is a highly talented professional who has been part of our success and family culture and everyone at PS&S is delighted to have her back.”
DiGerolamo’s earlier tenure with the firm focused on infrastructure and site development projects throughout New Jersey and New York, with a particular expertise in hydrology and hydraulics and storm water and floodplain management, the company said. She oversaw some of PS&S’ more notable projects, including the daylighting of the Sawmill River in Yonkers, New York, along with the Oakwood at Old Bridge residential development, the Hillsborough Promenade, the realignment of Greenwood Lake Turnpike and the Novartis campus expansions.
The firm added that DiGerolamo holds a bachelor’s in civil engineering from Stevens Institute of Technology and an MBA from Montclair State University. She is a licensed professional engineer in New Jersey, New York and Pennsylvania.
“It feels great to be back as part of the team with whom I have spent most of my career, especially now as the firm grows both organically and by acquisition to seize opportunities brought about by the nation’s infrastructure bill,” DiGerolamo said. “PS&S is a 60-year-old firm that continues to evolve without losing a commitment to technical excellence and each other.”