Jeff Worthington

President and Founder

Jeff Worthington is President of Senopsys, which he founded in 2006. He established the company to ensure that palatability does not become a barrier to successful drug development or patient adherence. Under his leadership, Senopsys has grown into a trusted partner to pharmaceutical companies worldwide, combining scientific expertise with dedicated laboratory and clinical capabilities for taste assessment and taste masking. He has built an organization focused not only on solving formulation challenges, but also on improving the patient experience of medicines.

Prior to founding Senopsys, Jeff was Vice President of Food and Pharmaceutical Technology at Arthur D. Little, where he led programs for pharmaceutical, biotechnology, and drug delivery companies and developed an international reputation in taste masking. He holds a BS in Chemistry from Northeastern University and an MBA from Babson College. Jeff chaired the Applied Sensory Technology Work Group of the National Institutes of Health’s Pediatric Formulation Initiative and holds multiple issued patents.

David Tisi

Technical Director

David Tisi is Technical Director at Senopsys and a founding member of the company’s scientific team, having joined in 2006. He directs Senopsys’ taste assessment and taste masking operations and leads a multidisciplinary team of formulation and sensory scientists focused on solving complex palatability challenges and improving patient acceptance of medicines.

His career has centered on applying sensory science and formulation expertise across a wide range of dosage forms and patient populations, ensuring that palatability is effectively addressed throughout drug development.

Under his technical leadership, Senopsys has advanced solutions to complex taste-related challenges for global pharmaceutical, biotechnology, and drug delivery companies. David brings more than two decades of experience spanning sensory analysis, excipient functionality, taste modulation, flavor construction, and processing technologies.

Prior to Senopsys, David built his foundation in food and pharmaceutical development. He holds a Master’s degree in Food Science from Cornell University, where he developed expertise in translating food-industry principles into patient-centric pharmaceutical solutions.

Vanik Petrossian

Principal Scientist

Vanik Petrossian designs and implements formulation strategies for mitigating aversive taste, odor, mouthfeel and texture attributes of drug actives and excipients. Vanik has more than thirty years of experience in food and pharmaceutical product development and is widely regarded as a leading expert in the taste masking of drug products. His experience includes both traditional dosage forms – liquids, powders and chewable tablets – and novel dosage forms including fast dissolving tablets, oral films and soft chews.

Before joining Senopsys, Vanik was a Principal Scientist at Arthur D. Little, Inc., where he was instrumental in the development of iconic brands of foods, beverages, and pharmaceuticals (Rx and OTC) for clients internationally. He began his professional career in product development at Kraft Foods where he worked on many technologies that are now used by the pharmaceutical industry. Vanik received his BA in chemistry from American University and holds several patents in food and pharmaceutical technology. He is a member of the American Association of Pharmaceutical Scientists and the Institute of Food Technologists.