John O’Farrell
InvestorBoard director at PagerDuty
Atherton, CA
Writes $1M – $100M checks · typically $10M
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About
John O'Farrell was a general partner at Andreessen Horowitz, where his early investment in Slack anchored a career that also spanned senior operating roles at Silver Spring Networks and @Home Network.
Board director at PagerDutyYC S10
Intro paths
PagerDuty went through Y Combinator (Summer 2010) — John sits on its board, so any YC alum in your network can reach them through the company's founders.
In turn, John can intro founders to PagerDuty's investors below.
PagerDuty's investors · 24
Co-founders at PagerDuty

Experience
- UNICEF USANational Board Membercurrent2018 — presentNew York, NY
- Andreessen HorowitzGeneral Partner2010 — 2025Menlo Park, California
- Silver Spring NetworksEVP Business Development2008 — 2010
- Opsware Inc.EVP Business Development2001 — 2007
- Excite@HomeEVP International1997 — 2001
- U S WEST/MediaOne Group Inc.President, US WEST Interactive Services Group1995 — 1997
- US WEST Inc.Vice-President, Corporate Strategy1992 — 1995
- Telecom Ireland (now Eircom), Dublin IrelandHead of New Enterprises1989 — 1992
- BOOZ ALLEN AND HAMILTONSenior Associate1986 — 1989
- ROLM Corp.Marketing Associate1985 — 1986
- EUROPEAN COMMUNITY (EU Commission), LuxembourgOnline Market Development manager1982 — 1984
- DIGITAL EQUIPMENT, Munich, GermanySoftware Specialist1980 — 1982
- Siemens AG, Munich GermanySoftware Development Engineer1979 — 1980
Skills & more
+5 more
Business AlliancesManagement ConsultingInternational BusinessNew Business DevelopmentProduct ManagementLanguages English · French · German · Portuguese · Spanish
From John's professional profile.
Deals · 1
GranularBoard seat
via Andreessen Horowitz · filed Sep 2015 · $21.1M raise
Attribution from SEC filings, press coverage, and firm rosters.
Other disclosed investments
Board seats
Investor
ApptioChangeXgooddata.aiIFTTTItsOnSlackSolum
Sources: SEC Form D filings · curated public sources.
Frequently asked questions
- Who is John O’Farrell?
- John O'Farrell was a general partner at Andreessen Horowitz, where his early investment in Slack anchored a career that also spanned senior operating roles at Silver Spring Networks and @Home Network.
- Where does John O’Farrell work?
- John O’Farrell is Board director at PagerDuty.
- What check size does John O’Farrell write?
- John O’Farrell typically writes checks of $1M – $100M.
- What boards does John O’Farrell sit on?
- John O’Farrell holds tracked board seats at gooddata.ai, Granular.
- What companies has John O’Farrell invested in?
- Investments tracked here include Apptio, ChangeX, gooddata.ai, Granular, IFTTT, ItsOn, Slack, Solum.
- Where did John O’Farrell go to school?
- John O’Farrell studied at Stanford University Graduate School of Business (MBA); University College Dublin (B.Eng., Electrical Engineering).
Same school
Also attended Stanford University Graduate School of Business2,000
+ 1,994 more
Also attended University College Dublin232
+ 226 more
Shared employers
Also worked at UNICEF USA10
+ 4 more
Also worked at Andreessen Horowitz271
+ 265 more








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