Fundraising Fox

Elaine Zelby

Investor

Partner at SignalFire

Stanford, California

Writes $5M – $20M checks · typically $12.5M

FoundedTestBox

About

Elaine Zelby is co-founder and Chief Revenue Officer at Tofu, an agentic demand generation platform for B2B marketing teams. Previously, she worked as an early-stage investor at SignalFire and held go-to-market and marketing leadership roles at early and growth-stage startups. Zelby publishes a weekly newsletter called 3 Things and hosts the (un)sexy podcast.

LinkedIn ↗X / Twitter ↗

Experience

  1. TofuCo-Founder and CROcurrent2023 — presentSan Francisco Bay Area
  2. SignalFireVenture Partnercurrent2023 — presentSan Francisco Bay Area
  3. SignalFirePartner2020 — 2023San Francisco Bay Area
  4. SignalFirePrincipal & Director of Growth2018 — 2020San Francisco Bay Area
  5. SVEN (Silicon Valley Executive Network)Board Of Directorscurrent2019 — presentSan Francisco Bay Area
  6. Product Marketing MastersCo-Foundercurrent2018 — presentSan Francisco Bay Area
  7. ConsenSysGrowth and Product Marketing Lead2017 — 2018San Francisco Bay Area
  8. SlackEnterprise Product Marketing Lead2017San Francisco Bay Area
  9. CaprizaDirector Product Marketing2016 — 2017San Francisco Bay Area
  10. CaprizaSr. Marketing Manager2014 — 2016Palo Alto, CA
  11. CaprizaProduct Marketing Manager2012 — 2014SF Bay Area
  12. Zazzle, IncProduct Manager - Associates Channel2010 — 2012
  13. Stanford University Oral Presentation of Research AwardAward Winner2006 — 2007
  14. Stanford UniversityResearch Assistant - Stanford Nanobiotechnology Laboratory2006 — 2007Stanford University

Education

  1. Stanford UniversityM.S, Mechanical Engineering2009 — 2010
  2. Stanford UniversityB.S., Biomechanical Engineering2005 — 2009

Skills & more

Management10Public Speaking1User Experience18Product Management35Omniture3E-commerce38Product Design3Analytics13Product Development7Web Analytics6Online Advertising5User Experience Design1
+12 morePhotoshopRapid PrototypingUsability TestingGraphic DesignProject ManagementHTMLUser Interface DesignEmail MarketingSEOSEMSalesforce.comEnterprise Software

From Elaine's professional profile.

Founder mafias

Stanford University mafia721

Also came through, then founded or led a company.

Reid HoffmanB.S.Founded Manas AI +1Joe LonsdaleBSFounded Opto +3Mike Maples JrBSFounded Pattern BreakersSteve JurvetsonBSEEFounded Mojo VisionAnsuman SatpathyAssistant ProfessorFounded Santa Ana Bio +2Dan SirokerB.S.Founded Limitless +2

+ 714 more

ConsenSys mafia15

Also came through, then founded or led a company.

Nikhil GuptaSoftware EngineerFounded Superpowered +1Joseph LubinFounderFounded Ethereal VenturesMin TeoPartner, Venture InvestmentsFounded Ethereal VenturesPraneeth SrikantiInvestment Principal, Consensys VenturesFounded Ethereal VenturesPelle BraendgaarduPort Technical LeadFounded NotabeneAndres JungeSenior Architect / dApp DeveloperFounded Notabene

+ 8 more

SignalFire mafia7

Also came through, then founded or led a company.

Brian NoguchiEntrepreneur in ResidenceFounded Smartcuts +1Brad HooverFormer CEO of GrammarlyFounded GrammarlyTony HuiePartnerFounded TwingateJonathan DowneyScout InvestorFounded AirwareLauren (Luna) Ray VegterAssociateFounded Plura (formerly Bloom Community)Charu SharmaInvestor / Entrepreneur-in-ResidenceFounded Fenrock AI

Same school

Also attended Stanford University2,000

Peter ThielCo-founder & Partner at Founders FundReid HoffmanCo-founder of LinkedIn; Partner at GreylockDavid SacksCo-founder & General Partner at Craft Ventures; former White House AI & Crypto CzarKeith RaboisManaging Director at Khosla VenturesGarry TanPresident & CEO of Y CombinatorAlfred LinPartner at Sequoia Capital

+ 1,994 more

Shared employers

Also worked at SignalFire38

RossInvestor at Dig Ventures Management LimitedTom RyanInvestor at FELIX CAPITALSooah ChoFormer Underscore Principal at Underscore VCAsher BantockHead of Research at SignalFireBill MacCartneyFormer VP ML at Cohere at SignalFireChris FarmerPartner & CEO at SignalFire

+ 32 more

Also worked at Slack51

Mamoon HamidPartner at Kleiner PerkinsHans TungManaging Partner at Notable CapitalDave MunichielloInvestor at GV (Google Ventures)Neha JewalikarDirector of Communications at Scale Venture PartnersGlenn SolomonInvestor at GGV CapitalJules MaltzInvestor at IVP (Institutional Venture Partners)

+ 45 more

Also worked at Capriza1

Brian MeltonPartner at Tenaya Capital

Also worked at Zazzle, Inc6

Ravi GroverGeneral Partner at Data TechAli RosenthalManaging Partner at Leadout CapitalAmber HarrisonInvestor at Friends Family CapitalBing GordonInvestor at G2 Venture PartnersJosh ElmanInvestor at Greylock PartnersBing GordonSenior Advisor at Juno Capital Partners

Deals · 1

TestBoxBoard seat

via SignalFire · filed Oct 2025 · $11.4M raise

Attribution from SEC filings, press coverage, and firm rosters.

Colleagues at SignalFire

Aayush Sharma
Senior Associate at SignalFire
Alex Hooshmand
Co-founder ZaiNar & Bluekai at SignalFire
Andrew Reid
Director, GTM Recruiting at SignalFire
Asher Bantock
Head of Research at SignalFire
Ben Davenport
CTO & Co-founder of BitGo; former Co-founder of Beluga at SignalFire
Bill MacCartney
Former VP ML at Cohere at SignalFire
Bobby Lent
Managing Partner at Hillsven & Co-founder of Ariba at SignalFire
Brad Hoover
former CEO of Grammarly at SignalFire

Network6

Bradford Jones
Principal at SignalFire
Chris Farmer
Partner & CEO at SignalFire
Chris Scoggins
Partner at SignalFire
Elias Davis
Partner at Kli Capital
Ellen Blix
Partner & Head of Investor Relations at SignalFire
Ilya Kirnos
Partner & CTO at SignalFire

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