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Erik Buchanan

InvestorFounder

Partner at C3 Ventures · Co-Founder & CTO at CloseFactor

Los Angeles, California

Writes $100K – $1M checks · typically $500K

FoundedCloseFactor

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Ask Aydin Senkut to introduce you to Erik

You →Aydin · together at Semgrep (2025–2026) →Erik

Ask Jamie Chen to introduce you to Erik

You →Jamie · 11 people · together at LinkedIn →Erik

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About

Head of AI at Semgrep; previously VP of Engineering at Connectifier, Head of Talent Relevance at LinkedIn, and founder of CloseFactor.

Co-Founder & CTO at CloseFactor

Intro paths

→

In turn, Erik can intro founders to CloseFactor's investors below.

CloseFactor's investors · 6

AspenwoodSan Francisco · $100K – $5M checksC3 VenturesLos AngelesGTMfundScottsdale · $1M – $3M checksNeythri Futures FundLos GatosSequoia CapitalMenlo Park · $4.4M – $214M checksVertex VenturesPalo Alto · $500K – $10M checks

Co-founders at CloseFactor

LJLeena Joshi
Leena JoshiCo-Founder & CEO
BCBen Cheung
Ben CheungCo-Founder & CPO

Experience

  1. SemgrepHead of AIcurrent2025 — presentCalifornia, United States
  2. C3 VenturesFounder and Partnercurrent2017 — presentSan Francisco Bay Area
  3. CloseFactorCo-founder and CTO2020 — 2024California, United States
  4. LinkedInHead of Artificial Intelligence for Hiring Products, Chief AI Evangelist2017 — 2020San Francisco Bay Area
  5. LinkedInSenior Software Engineering Manager2016 — 2017San Francisco Bay Area
  6. Connectifier, Inc.VP Engineering2012 — 2020Newport Beach, CA
  7. GoogleSoftware Engineer2010 — 2013Irvine, CA
  8. WebsenseSecurity Researcher2008 — 2010San Diego County, California, United States
  9. UC San DiegoTeaching Assistant2005 — 2008
  10. MicrosoftSoftware Engineer: Windows Azure Storage2008Redmond, WA
  11. GoogleSoftware Engineer Intern2007Mountain View, CA
  12. IntuitSoftware Engineer: TurboTax Payment Systems2007
  13. NASA ISS EarthKAMJava/C++ Team Lead2004 — 2006San Diego County, California, United States
  14. MicrosoftSoftware Development Engineer in Test2006Redmond, WA
  15. LinspireSoftware Engineer Intern2005San Diego County, California, United States

Skills & more

Engineering LeadershipMachine Learning4Java14Management2Software Engineering12Software Development12Distributed Systems10Algorithms8Computer Science7Object Oriented Design4Software Design3Programming3
+12 moreOOPDesign PatternsDebuggingWeb ApplicationsGame DevelopmentArtificial IntelligenceComputer SecurityLinuxC++CSQLEclipse

Languages English · Spanish

From Erik's professional profile.

Investments

Per curated public sources.

Colleagues at C3 Ventures

Ben McCann
Advisor at C3 Ventures
John Jersin
Investor at C3 Ventures

Network8

Ben DavenportScout
Venture Partner at Blockchain Capital
Igor RyabenkiyScout
Founder and Managing Partner at AltaIR Capital
Justin MateenScout
Founding Partner at Jam Fund
Wei GuoScout
Founding Partner at UpHonest Capital
Ben McCann
Advisor at C3 Ventures
David Marcus
Investor at FELIX CAPITAL
Edson Rigonatti
Co-founder & General Partner at Astella
Patrick Chung
General Partner at Xfund

Investors connected to Erik in public investor directories — a warm-intro map.

Frequently asked questions

Who is Erik Buchanan?
Head of AI at Semgrep; previously VP of Engineering at Connectifier, Head of Talent Relevance at LinkedIn, and founder of CloseFactor.
Where does Erik Buchanan work?
Erik Buchanan is Co-Founder & CTO of CloseFactor and Partner at C3 Ventures.
What check size does Erik Buchanan write?
Erik Buchanan typically writes checks of $100K – $1M.
What companies did Erik Buchanan found?
Erik Buchanan founded CloseFactor.
What companies has Erik Buchanan invested in?
Investments tracked here include ArchForm, CB Therapeutics, Curebase, Frey, GEn1E Lifesciences, Green Energy Exchange, Mark Cuban Cost Plus Drug Company, PBC, Modern Health, Momentus, OrgOrg, Perceptive Technologies, Qulture.Rocks, and 3 more.
Where did Erik Buchanan go to school?
Erik Buchanan studied at UC San Diego (Bachelor's degree, Computer Science); UC San Diego (Graduate research, Security).

Founder mafias

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