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 more than 35 years. PSI performs over 250 active programs annually, conceived and implemented by an excellent staff of 135 technical professionals. He emphasizes technical excellence in staff recruiting, development and program performance.

Bill Marinelli

Bill Marinelli - President and Chief Operating Officer

Bill Marinelli came to PSI from a postdoctoral position at Cornell after receiving a PhD in Physical Chemistry from UC Berkeley. He has oversight responsibility for a range of programs in the development of materials, marine, and propulsion technologies while continuing to have direct program management responsibility in the area of detection system development for CBRNE defense.

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, Applied Sciences, 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 eight years of experience in high tech manufacturing and an MBA from Babson College. Steve oversees PSI’s financial and administrative management, including Finance and Accounting, 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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