Primary Role
General Partner at Matrix Partners
Williams College

Person Details


Tim Barrows is a general partner at Matrix, where he has invested in technology start-ups for twenty-five years. In his role as a lead investor and board member, Tim has assisted entrepreneurs in ushering ventures from their earliest stages through to successful outcomes. More than fifteen of the companies he helped establish and grow have gone onto successful acquisitions or initial public offerings.

Tim has advised and supported entrepreneurs across a range of technology sectors, including enterprise software, SMB-focused business services, communications and semiconductors. He has counseled entrepreneurs through multiple economic cycles and various technology booms, and has mentored many first-time CEOs.

Under Tim’s stewardship, Matrix Partners has delivered some of the highest performing funds of all time and expanded into international markets.

Prior to Matrix Partners, Tim worked in investment banking at Merrill Lynch White Weld, splitting his time between the technology group in corporate finance and the mergers and acquisitions group. He was also active in several seed stage investments.

Tim joined Matrix Partners in 1984. Among the companies he has worked with over the years are OnDisplay, a provider of Web infrastructure software (IPO and later acquired by Vignette for $1.7 billion); Qihoo 360, the leading internet security company in China (Nasdaq: QIHU); SilverStream Software, a leader in Web services-oriented application development (IPO, later acquired by Novell); Starent Networks, the leading provider of infrastructure solutions for mobile carriers (Nasdaq: STAR); Sycamore Networks, a provider of multiservice network solutions (Nasdaq: SCMR); and Tivoli Systems, the leading provider of system management solutions for distributed systems (one of the top two IPOs in 1995, later sold to IBM).

While continuing to support entrepreneurs starting companies in the U.S., Tim leads the firm’s international efforts, which have included recruiting founding partners and establishing two new funds in Mumbai, India and Beijing, China.


Williams College, BA, Political Economy, magna cum laude, Phi Beta Kappa

Stanford Graduate School of Business, MBA

Experience (2)


Advisory Roles (23)