Meet the Team

PSI’s senior management team has invested their careers in building a world class technology development organization. We started as scientists and continue to do science. That’s our culture.

Dave Green

Dave Green - CEO

Dr. Green has participated in the growth of the Physical Sciences Inc. for 45 years, emphasizing technical excellence in program performance, and focusing on aggressive technology maturation to enable its rapid, successful transition to fulfill the needs of our government and commercial customers.

Bill Marinelli

Bill Marinelli - President and Chief Operating Officer

Bill Marinelli came to PSI from a postdoctoral position at Cornell University after receiving a PhD in Physical Chemistry from the University of California, Berkeley. At PSI his research activities ranged from upper atmospheric chemistry and chemical kinetics to spectral imaging technologies supporting chemical, biological, radiological, nuclear, and explosives defense. As a senior manager he had oversight responsibilities for many of PSI’s efforts in materials development, tactical imaging, energy and propulsion technology, and nuclear detection. In his current role as President and Chief Operating officer he leads PSI corporate business planning activities while having direct oversight of technology transition within its Applications Division.

Mark Allen

Mark Allen - Executive Vice President, Research and Development

Mark joined PSI with a fresh PhD from Stanford in 1987 and began developing programs and products in advanced laser-based sensing. As EVP, Research & Development, he contributes to and manages activities ranging from discovery science in optical metamaterials to ophthalmology instrumentation production.

Steve Genestreti

Steve Genestreti - Chief Financial Officer

Steve joined PSI in 1990 with a background in high tech manufacturing and an MBA from Babson College. Steve oversees PSI’s financial and administrative management, including Finance and Accounting, HR, Legal, Tax and Treasury functions.

Corporate Organization

Our corporate organization is designed to efficiently harness the capabilities of the entire corporation, including subsidiaries, in addressing the complex, multi-disciplinary problems of our customers. Within PSI, vibrant technology areas are headed by the scientists and engineers that built them. We have a broad base of core competencies and combine them across the organizational charts to develop solutions.

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