Senior Management Team
Sheila J. Duffy – President and Founder
Sheila Duffy is the Founder and President of Greystones Group (GG). With over 20 years of management experience with Fortune 500 companies, government agencies and start ups, Ms. Duffy brings a wealth of strategic expertise in a variety of communications and technology disciplines. Prior to founding GG, Ms. Duffy held executive positions at Verizon (Bell Atlantic) as well as several Internet start ups. Highlights of her career include directing communications for the Video on Demand trial (a precursor to FIOS) at Verizon, one of the first commercial Video on Demand trials in the country. Prior to this role, Ms. Duffy was selected for a competitive task force reporting to the Office of the Chairman. In this position, Ms. Duffy worked with executives of company business units to develop communications and operational strategies. She worked with the Wharton School to develop a computer simulation model of the telecommunications industry, used to determine the impact of various strategies on costs, market share and revenue.
She is currently serving on the Board of the Trustees of the US Army Command and General Staff College Foundation and Ovarian Cancer Research Fund. Ms. Duffy has also served as an adjunct professor of communications at George Mason University.
Ms. Duffy graduated with a B.S. from the College of William and Mary in Virginia and holds an M.B.A. from George Washington University in Washington, D.C.
Mary-Sara Camerino
Ms. Camerino brings over 10 years of international consumer technology product development and IT consulting experience to her clients. She has worked for Fortune 50 Companies, civilian government agencies and the Department of Defense. She can support a variety of projects, but specializes in planning, launching and managing of multimedia and security products. Ms. Camerino’s career began with Electronic Data Systems. After a short stint as a technical recruiter specializing in the selection of hard-to-find candidates through Behavior Interviewing®, Ms. Camerino lent her talents to the National Guard Bureau’s Distance Learning Project (NGBDLP). She acted as a regional team leader for the NGBDLP. With her team, she planned for and deployed over 20 high-end distance learning classrooms in its region. This successful deployment was the first ever of its kind for the Army National Guard, and is still in use today. More recently, Ms. Camerino was a Principal Product Manager at America Online Inc. Several of Ms. Camerino’s projects at AOL gained national recognition for providing world class security products to the AOL membership. Ms. Camerino graduated with honors from the Johns Hopkins University with a Master of Science in Information Technology concentrating in e-commerce and advanced technologies. She received her undergraduate degree from Virginia Polytechnic and State University. Ms. Camerino is an active member of Women in Technology (WIT) and the Product Development and Management Association (PDMA). Ms. Camerino is also a member of the Johns Hopkins University chapter of Alpha Iota Mu (AIM). Back to top
Carol Wolinsky
With over twenty years of research experience, Ms. Wolinsky has demonstrated expertise in determining the appropriate research techniques for solving complex marketing problems. She has extensive experience in all forms of data collection, including online, telephone and in-person interviewing and applies these techniques to address concerns in a variety of industries, including hospitality, telecommunications, Internet/broadband services, Internet security services, cable and satellite TV. Previously, Ms. Wolinsky was the Group Manager of Market Research at Verizon. Responsible for completing over 100 studies annually at a value in excess of $2 million, she directed all marketing research for new and growth products in the consumer and small/medium business markets. Ms. Wolinsky also worked at: Applied Management Sciences, where she conducted research on the effectiveness of federal government programs; at Technical Assistance and Training Corporation, where she trained managers of state and local employment and training programs; and at the Maryland Department of State Planning, where she managed a project to coordinate the work of all state human services agencies. Ms. Wolinsky is a member of the American Marketing Association and serves on the Market Research committee of the Washington, DC Chapter. She has been a presenter at various industry forums. Ms. Wolinsky earned a Graduate Certificate in Market Research from American University and holds a Master of Science Degree from Cornell University and a Bachelor of Arts degree from The City College of New York. Back to top