John O’Farrell is an Irish venture capitalist at the Silicon Valley firm Andreessen Horowitz, which he joined in June 2010 as its third general partner.

[1] He has served on the boards of UNICEF USA, PagerDuty, Slack,[2] Factual, GoodData,[3] Granular,[4] IFTTT, ItsOn and the Second Harvest Food Bank of Santa Clara and San Mateo Counties.

[10] Prior to @Home, O’Farrell held general management, marketing and consulting positions in the United States and Europe with US WEST, Telecom Ireland, Booz Allen Hamilton, the European Commission, Digital Equipment Corp. and Siemens.

[11] With CEO Ben Horowitz, O’Farrell negotiated Loudcloud's 2002 exit from the services business and its emergence as a server automation software company named Opsware with a $52 million initial contract from EDS.

[12] Over the subsequent five years, O’Farrell led the expansion of Opsware's product line into asset-management, networking,[13] storage[14] and runbook automation[15] through four acquisitions as well as overseas partnerships with NEC Corp.[16] and NTT Communications.