Joseph is a Partner at Greylock focused on investing in enterprise applications, security and storage as well as new emerging mobile applications.
Prior to joining Greylock, Joseph spent the majority of his career as an entrepreneur. He was CEO and co-founded several companies including Vontu, which was acquired by Symantec in November 2007 for $350 million. Prior to Vontu, Joseph co-founded and was CEO of Connectify which was acquired by Kana and subsequently went public in 1999. Joseph also worked at Macromedia and Apple which acquired his first company, Trio Development.
Joseph is currently on the Board of Directors of Lookout, Sumo Logic, and Trifacta. Prior to Greylock, Joseph has individually invested and actively helped several companies including Lookout, Smartling, Pipewise, and MobileIron.
Joseph has testified before Congress on issues of consumer data security and privacy and served on the Board of the Homeless Prenatal Program, a non-profit helping homeless families to have healthy children and find permanent housing.
Joseph received a Bachelor of Science in Applied Economics from the Wharton School at the University of Pennsylvania where he is currently a member of the Wharton Undergraduate Executive Board.