Fundraising Fox

Alex Chantavy

Founder

Co-founder & CEO at SubImage

San Francisco Bay Area

FoundedSubImage Β· YC

About

Alex Chantavy is co-founder and CEO of SubImage. Previously, he was a staff engineer at Lyft where he developed an open source security graph tool, and a security engineer on Microsoft's Red Team focused on cloud security. He has also held positions in security and infrastructure roles at the NSA.

LinkedIn β†—X / Twitter β†—
Latest on 𝕏

alex chantavy @alexchantavy

Legends from my @lyfteng days like @mattklein123 and @vmcheung have been on @theCUBE, so getting invited on myself to talk knowledge graphs, AI, and security feels surreal. Yup I’m humble bragging; let me have this ok https://t.co/juYJ7Dr7tD

Jul 30, 2026 Β· β™₯ 2

alex chantavy @alexchantavy

Just recorded an entire video demo with the microphone turned off. I am going home now

Jul 3, 2026 Β· β™₯ 1

alex chantavy @alexchantavy

SF fidi needs malatang 🍲

Jun 24, 2026

Co-founder & CEO at SubImageYC W25

Intro paths

YC

Alex went through Y Combinator (Winter 2025) β€” any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Gustaf Alstromer β€” the partner who ran SubImage's batch and knows the company first-hand. YC profile β†—

β†’

In turn, Alex can intro founders to SubImage's investors below.

SubImage's investors Β· 2

FundersClubY Combinator

Co-founders at SubImage

KSKunaal Sikka
Kunaal SikkaCo-founder & President

Experience

  1. SubImageCo-founder & CEOcurrent2024 β€” presentSan Francisco Bay Area
  2. LyftStaff Software Engineer2019 β€” 2024San Francisco Bay Area
  3. University of WashingtonInstructor2019 β€” 2020
  4. MicrosoftSenior Security Software Engineer2016 β€” 2018Greater Seattle Area
  5. National Security AgencyCapabilities Development Specialist2014 β€” 2015Washington D.C. Metro Area
  6. National Security AgencyComputer Systems Analyst2011 β€” 2014Hawaii

Education

  1. University of WashingtonMaster of Science - MS, Computer Science2016 β€” 2020
  2. University of Hawaii at ManoaBachelor of Science (B.S.), Computer Science2007 β€” 2011
  3. Iolani School

Skills & more

Software Engineering6Malware Analysis7Reverse Engineering7Windows Internals3Computer Science11Web Development9Citrix XenDesktop4Algorithms4Networking3Programming6Kernel Debugging1Penetration Testing1
+11 moreCAssembly LanguageComputer SecurityLinuxJavaPythonJavaScriptPowershellVMware ESXMySQLDatabases

Languages Chinese Β· English

From Alex's professional profile.

Same school

Also attended University of Washington186

Andrew ChenGeneral Partner at Andreessen HorowitzVictoria TreygerGeneral Partner at Felicis VenturesAndrewAdvisor at Clear VenturesJoseph HorsmanInvestor at Madrona Venture GroupTed KummertVenture partner at Madrona focused on enterprise infrastructure, data, and intelligent applicationsJohn CarpenterInformation Technology Director at Madrona Venture Group

+ 180 more

Also attended University of Hawaii at Manoa26

Raymond CheResearch Associate at Archer Capital GroupShirish DeodharInvestor at Pentathlon VenturesLewis PinaultChief Scientist at Airbus VenturesDr. Virginia CHAVenture Partner at iGlobe PartnersTim YoungCo-Founder and General Partner at Eniac VenturesSteve KiserGeneral Partner at Veteran Ventures Capital

+ 20 more

Also attended Iolani School4

Zachary YamadaFinance Lead at Comcast VenturesKevin TanakaPrincipal at Corner VenturesAlly HaradaPartner and COO at Prime Impact FundRayfe Gaspar-AsaokaPartner at Canaan Partners

Shared employers

Also worked at Lyft55

Navin ChaddhaManaging Partner at MayfieldDarcy YeeMarketing and Communications at Menlo VenturesPierre-Eric LeiboviciInvestor at DaphniManish GuptaInvestor at IVP (Institutional Venture Partners)MarΓ­a de Lera AuerspergInvestor at KfundDavid RustAdvisor, Executive Coach at Verissimo Ventures

+ 49 more

Also worked at University of Washington64

Joseph HorsmanInvestor at Madrona Venture GroupMike FridgenVenture Partner at Madrona Venture GroupSid ShenaiVenture partner at Madrona and co-founder and CEO of Proof DiagnosticsPaul JennyBoard Chair at CincyTechJason PrestonInvestor at Alsop Louie PartnersElliot HershbergScientist, Writer, and Investor on a mission to accelerate The Century of Biology

+ 58 more

Also worked at Microsoft737

Reid HoffmanCo-founder of LinkedIn; Partner at GreylockGarry TanPresident & CEO of Y CombinatorJavier SolteroSenior Venture Partner at Felicis VenturesViviana FagaGeneral Partner at Felicis VenturesWesley ChanInvestor at Felicis VenturesQuentin ClarkInvestment Team at General Catalyst

+ 731 more

Also worked at National Security Agency13

William P. CrowellInvestor at Alsop Louie PartnersGeorge BarnesPresident, Cyber Practice at Red Cell IncubationJohn KeefeFormer Cyber & Space Leader, National Security Agency, National Security Council, & NASA at NEW VISTA CAPITALJ. David HarrisPartner at SINEWAVE VENTURESDavid EndlerGeneral Partner & Co-Founder at Runtime VenturesRon GulaPresident at Gula Tech Adventures

+ 7 more