John joined Greylock as a partner in 2011. Prior to Greylock, John was CEO of Mozilla, the organization behind Firefox, an open source Web browser used by more than 450 million people. John also co-founded Reactivity, an enterprise security infrastructure company acquired by Cisco in 2007, where he served as founding CEO and later CTO.
Earlier in his career, John held positions on the executive team at Trilogy Software and as a Senior Scientist in Apple's research labs.
John is currently on the Board of Directors of Citrus Lane, Clearslide, Code for America, Mozilla Corporation, and the Participatory Culture Foundation. He is a board observer at Tumblr, lead's Greylock's investment in Dropbox and led the investment in Instagram (acquired by Facebook). John previously served on the boards of directors of TripIt (acquired by Concur in 2011), CenterRun (acquired by Sun Microsystems in 2003), and Reactivity (acquired by Cisco Systems in 2007).
John holds a BS in Computer Systems Engineering and an MS in Computer Science with a focus on Human Computer Interaction, both from Stanford University. He is a frequent contributor at Stanford's d.school, and an advisor to both the Stanford Technology Ventures Program and StartX, Stanford's start up accelerator,
He is a co-inventor on seven United States patents.
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January 09th – The best thing about writing for me is that it helps me figure out what I really think about things. And one of the very best things about doing it on the web is that others can collaborate, disagree, tweak, suggest, and generally help think through things even better. So after a couple of days [...] Leave a Comment
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