Fundraising Fox

Henry Birge-Lee

Founder

Founder at Crosslayer Labs

High Bridge, New Jersey, United States

FoundedCrosslayer Labs · YC

About

Henry Birge-Lee works on web and network security, having contributed to HTTPS security infrastructure. He is now developing the Crosslayer Labs platform focused on web resource integrity.

Founder at Crosslayer LabsYC W26

Intro paths

YC

Henry went through Y Combinator (Winter 2026) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Tyler Bosmeny, General Partner at Y Combinator — the partner who ran Crosslayer Labs's batch and knows the company first-hand. YC profile ↗

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In turn, Henry can intro founders to Crosslayer Labs's investors below.

Crosslayer Labs's investors · 1

Y CombinatorSan Francisco · $500K checks · since 2026

Co-founders at Crosslayer Labs

GCGrace Cimaszewski
Grace CimaszewskiFounder
PMPrateek Mittal
Prateek MittalFounder

Experience

  1. CrossLayer LabsChief Executive Officercurrent2025 — presentSan Francisco, California, United States
  2. Princeton UniversityResearch Software Engineer2017 — 2025Princeton, New Jersey, United States

Skills & more

Languages English · Spanish

From Henry's professional profile.

Frequently asked questions

Who is Henry Birge-Lee?
Henry Birge-Lee works on web and network security, having contributed to HTTPS security infrastructure. He is now developing the Crosslayer Labs platform focused on web resource integrity.
Where does Henry Birge-Lee work?
Henry Birge-Lee is Founder of Crosslayer Labs.
What companies did Henry Birge-Lee found?
Henry Birge-Lee founded Crosslayer Labs.
Where did Henry Birge-Lee go to school?
Henry Birge-Lee studied at Y Combinator (W26 Batch); Princeton University (Bachelor of Arts - BA, Computer Science); North Hollywood High School Highly Gifted Magnet (High School Diploma).

Founder mafias

Y Combinator mafia8,773

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+ 8,766 more

Y Combinator mafia4,716

Also came through, then founded or led a company.

Ryan SheaEntrepreneurshipFounded StacksTarek MansourFounded KalshiSuhail DoshiEating beans & riceFounded Playground +1Subomi OluwalanaW22Founded ConvoyDarius "Bubs" MonsefS19Founded Sightbox +3Matthew ScholzFounded Oisin Biotechnologies +3

+ 4,709 more

Princeton University mafia160

Also came through, then founded or led a company.

Ryan SheaBSEFounded StacksDario AmodeiPhDFounded AnthropicFei-Fei LiBachelor of Arts - BAFounded World LabsChristian SchadeBachelor of Arts - BAFounded Halda Therapeutics +2Emin Gun SirerB.S.E.Founded Avalanche +2Luke EvninBachelor’s DegreeFounded Mpmcapital +1

+ 153 more

Same school

Also attended Y Combinator2,000

Tarek MansourCo-founder & CEO of KalshiSuhail DoshiFounder of Mixpanel; founder of ParticleSubomi OluwalanaCo-founder & CEO of ConvoyArhaan A.Deeptech Fellow at Clear VenturesMaroof AhmedFounder at Octopus VenturesJustin SwartPartner at Bitkraft Esports Ventures

+ 1,994 more

Also attended Princeton University745

Fabrice GrindaCo-founder & Managing Partner at FJ LabsRyan SheaCo-founder of Blockstack (Stacks)Dario AmodeiCo-founder & CEO of AnthropicFei-Fei LiCo-founder & CEO of World Labs; Sequoia Professor of Computer Science at StanfordCat WuInvestor at Index VenturesKJ SidberryInvestor at GV (Google Ventures)

+ 739 more

Shared employers

Also worked at CrossLayer Labs1

Grace CimaszewskiFounder at Crosslayer Labs

Also worked at Princeton University111

Dario AmodeiCo-founder & CEO of AnthropicFei-Fei LiCo-founder & CEO of World Labs; Sequoia Professor of Computer Science at StanfordRyan HaysBoard Member at CincyTechBrad FloraBacking expeditions into the futureManny StockmanManaging Partner at Osage University PartnersBrannon JonesPrincipal at AlleyCorp

+ 105 more