Jeff Fagnan is a Partner in the technology group, and focuses on emerging companies in enterprise and internet infrastructure. 

Before joining Atlas Venture, Jeff was a Partner with Seed Capital Partners.  While at Seed Capital, Jeff was the lead and founding investor in several companies, including DataPower (acquired by IBM) and Polychromix (acquired by ThermoFisher).   Before venture, Jeff worked for Booz Allen & Hamilton and Nortel Networks.

Since joining Atlas, Jeff has been the founding investor and a Board member for AEB, Bit9, DataXu, Keas, Songbird and Veracode. He sits on the Boards of SimpleTuition and Grockit and serves as a Board observer for clean tech companies MiaSole and Mascoma. He is an investor in Abine, Tokutek, Namesake and Learnboost. Jeff led the firm’s investment in DataPower which was acquired by IBM in 2005.

Jeff is a founder of TUGG (Technology Undwriting Greater Good), a non-profit foundation harnessing "Crowd-sourced Philanthropy" to catalyze social innovation in New England. Jeff was also a founder of Koffee for Kids, a non-profit company in Rochester, New York.

Jeff received his M.B.A. with distrinction from the William E. Simon Graduate School of Business at the University of Rochester and a B.S. from the University of Alaska.