Company   |   Leadership

Duncan Lennox, CEO and Co-founder

the world’s top companies. Prior to Qstream, he co-founded and served as CTO of WBT Systems, makers of an enterprise platform used by millions of business professionals. Duncan lends his expertise in mobile tech and analytics at industry conferences, and has been quoted in Forbes, CNN and RTÉ on topics of entrepreneurship. He has a B.Sc. in Computer Science from University College Dublin.

Dave Stack, Chief Financial Officer

Dave’s experience building high-value software companies and financial models in support of strategic growth decisions are instrumental to Qstream’s continued global expansion. Joining from mobile analytics provider, Localytics, Dave previously served as CFO for HubSpot, helping to secure three rounds of funding and oversee strategic acquisitions and related integrations leading up to a successful IPO. Previously, he held VP finance roles for EMC and RSA Security, and is a current board member of BrandYourself.

Joe Gruttadauria, Vice President Worldwide Sales

Joe has a track record of building great sales teams and customer relationships – taking each to new levels of productivity and profitability. Prior to Qstream, he led strategic sales initiatives for San Jose-based Clarity Consultants, and held executive leadership roles at Oracle, SAP, Peoplefluent, Softscape and Centra Software. Joe has an MBA from the Rochester Institute of Technology, a BS in Business from State University of New York, and served as an adjunct professor for the graduate school of business at Philadelphia University.

Mary Hallice, Director of Healthcare Solutions

Each day Mary consults with some of the world’s largest and most reputable healthcare systems, teaching hospitals and medical associations to help identify and introduce technology solutions for improving the knowledge and skills of their clinicians. Prior to joining Qstream in 2011, Mary advised corporate, institutional and government accounts on the acquisition and application of advanced data visualization technologies. She graduated with a BS in Accounting and Marketing from Bentley University, always enjoys a good game of golf, and is actively involved with her kids’ youth hockey activities.


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