Fundraising Fox

Yong Hee Lee

Founder

Founder at Cuckoo Labs

San Francisco, California, United States

FoundedCuckoo Labs · YC

About

Yong Hee Lee is co-founder and CEO of Cuckoo Labs, an AI interpretation platform. He previously held go-to-market leadership roles at two Korean startups in programming education and AI infrastructure, and studied electrical engineering and science & technology policy at KAIST.

Founder at Cuckoo LabsYC W25

Intro paths

YC

Yong went through Y Combinator (Winter 2025) — any YC alum in your network can reach them through the YC community.

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In turn, Yong can intro founders to Cuckoo Labs's investors below.

Cuckoo Labs's investors · 5

BonAngels Venture PartnersSeoul · since 2025Mashup Ventures$160K – $3.2M checks · since 2025SchmidtSeoul · since 2025Smilegate InvestmentSeoul · $694K – $35M checks · since 2025Y CombinatorSan Francisco · $500K checks · since 2025

Co-founders at Cuckoo Labs

GKGunwoo Kim
Gunwoo KimFounder

Experience

  1. CuckooCo-founder & CEOcurrent2024 — present
  2. VESSL AIGrowth Manager2021 — 2024Seoul, South Korea
  3. BonAngels Venture PartnersAssociate2021Seoul, South Korea
  4. EliceGTM Manager2016 — 2018Seoul, South Korea
  5. Korea Advanced Institute of Science and TechnologyUndergraduate Researcher2016Daejeon, South Korea
  6. Emirates Nuclear Energy CorporationEngineering Intern2014 — 2015Barakah, United Arab Emirates
  7. Korea Institute of S&T Evaluation and Planning (KISTEP)Research Assistant Intern2013 — 2014Seoul, South Korea

Skills & more

Go-to-MarketProduct MarketingProduct ManagementSales

From Yong's professional profile.

Frequently asked questions

Who is Yong Hee Lee?
Yong Hee Lee is co-founder and CEO of Cuckoo Labs, an AI interpretation platform. He previously held go-to-market leadership roles at two Korean startups in programming education and AI infrastructure, and studied electrical engineering and science & technology policy at KAIST.
Where does Yong Hee Lee work?
Yong Hee Lee is Founder of Cuckoo Labs.
What companies did Yong Hee Lee found?
Yong Hee Lee founded Cuckoo Labs.
Where did Yong Hee Lee go to school?
Yong Hee Lee studied at Korea Advanced Institute of Science and Technology (Bachelor of Engineering - BE, Major in Electrical Engineering); Y Combinator (W25); West Vancouver Secondary School.

Founder mafias

Y Combinator mafia8,773

Also came through, then founded or led a company.

Sam AltmanPresidentFounded Tools for Humanity +3Jessica LivingstonCo-founderFounded Y CombinatorAlexis OhanianYC Summer 2005Founded RedditFred EhrsamYC Summer 2012Founded Nudge +1Matt HuangYC Winter 2011Founded HotspotsTrae StephensYC Winter 2022Founded Pursuit +1

+ 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

Korea Advanced Institute of Science and Technology mafia11

Also came through, then founded or led a company.

Youmin KimBachelor's DegreeFounded Take AppLucas OchoaExchange StudentFounded AutomatYongjin ParkBachelor of Science (BS)Founded 1849 bioRobert KimBachelor's degreeFounded LaminarDin MailibayBachelor of Science - BSFounded LaminarGunwoo KimBachelor of Science (BS)Founded Cuckoo Labs

+ 4 more

Same school

Also attended Korea Advanced Institute of Science and Technology31

Thorben RothePartner - Venture at Iris CapitalOhsang KwonPartner at SazzeJosh JungPrincipal at Z Venture CapitalArchi KongManaging Partner at Asia2G CapitalMinjoo KimPrincipal at Storm VenturesAlexandre t'SerstevensInvestment Manager at Finco

+ 25 more

Also attended Y Combinator2,000

Tarek MansourCo-founder & CEO of KalshiSuhail DoshiFounder of Mixpanel; founder of ParticleSubomi OluwalanaCo-founder & CEO of ConvoyMaroof AhmedFounder at Octopus VenturesJustin SwartPartner at Bitkraft Esports VenturesCollin WallaceGeneral Partner at Lobby Capital

+ 1,994 more

Shared employers

Also worked at VESSL AI1

HyungJun KimManaging Director at Sirius Investment

Also worked at Korea Advanced Institute of Science and Technology4

Ohsang KwonPartner at SazzeYongjin ParkFounder at 1849 bioHannah ChungFounder at TrustAIMichael HwangFounder at Datumo