About
William Hu previously worked at Robinhood and Retool, and currently leads RiskAngle, an AI platform for medical record summarization.
Founder at RiskAngleYC S24
Intro paths
YC
William went through Y Combinator (Summer 2024) — any YC alum in your network can reach them through the YC community.
GP
Their group partner at YC was David Lieb, General Partner at Y Combinator — the partner who ran RiskAngle's batch and knows the company first-hand. YC profile ↗
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In turn, William can intro founders to RiskAngle's investors below.
RiskAngle's investors · 1
Co-founders at RiskAngle
BC
Bill ChenFounder
Experience
- AnthropicMember of Technical Staffcurrent2025 — present
- RiskAngle (YC S24)Founder2024 — 2026
- RetoolSoftware Engineer2022 — 2024
- RobinhoodSoftware Engineer2020 — 2022
- GoogleSoftware Engineer2020
- Kleiner PerkinsEngineering Fellow2020
- NeoNeo Scholar2020
- YHackExecutive Director2019 — 2020
Skills & more
Research5Programming4Public Speaking4
From William's professional profile.
Frequently asked questions
- Who is William Hu?
- William Hu previously worked at Robinhood and Retool, and currently leads RiskAngle, an AI platform for medical record summarization.
- Where does William Hu work?
- William Hu is Founder of RiskAngle.
- What companies did William Hu found?
- William Hu founded RiskAngle.
- Where did William Hu go to school?
- William Hu studied at Y Combinator (S24); Yale University (Master of Science - MS, Computer Science); Yale University (Bachelor of Science - BS, Computer Science).
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
Yale University mafia190
Also came through, then founded or led a company.
Michael SeibelBAFounded SocialCamBen SilbermannB.A.Founded Audiobeta +2Justin KanPhysics and PhilosophyFounded Stash +6Kevin RyanBAFounded Business Insider +2Harry GrunerFounded Hilos +2Emmett ShearBSFounded Softmax +2
+ 183 more
Kleiner Perkins mafia54
Also came through, then founded or led a company.
Raphael RouvinovEngineering FellowFounded Luminopia +1Rebecca LeeKleiner Perkins FellowFounded Elayne +1Jesse HuEngineering FellowFounded Abundant +1Ted SchleinGeneral PartnerFounded GetReal SecurityMuzzammil (MZ) ZaveriPartnerFounded ProxinoDr. Cheryl MartinExecutive in ResidenceFounded Renmatix
+ 47 more
Anthropic mafia38
Also came through, then founded or led a company.
Mike KriegerMember of Technical StaffFounded InstagramReed HastingsBoard MemberFounded InterPositiveTom BlomfieldMember of Technical StaffFounded Monzo +1Guru ChahalInvestorFounded Avi NetworksDavid LangerInvestorFounded ZestyKiko WemmerProduct PartnershipsFounded Dandelion Health
+ 31 more
Same school
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
Also attended Yale University651
Ann Miura-KoCo-founding Partner at FloodgateDavid SzeAdvisory Partner at GreylockMichael SeibelPartner Emeritus at Y CombinatorBen SilbermannCo-founder of PinterestZheela QaiserInvestor at Index VenturesAnthony PhilippakisInvestor at GV (Google Ventures)
+ 645 more
Also attended Saratoga High School26
Ciara Campbell BowenExecutive Assistant at Sapphire VenturesLeo FonsecaSr. Principal at Graphene VenturesDrew KriensPrincipal at Ironspring VentureChris HulmeSenior Associate at Sorenson VenturesDominick RichiusoInvestor at Founders Circle CapitalAgastya GuptaSenior Associate at Nyca Partners
+ 20 more
Shared employers
Also worked at RiskAngle (YC S24)1
Also worked at Retool16
Ghazi MasoodVenture Partner at Ansa CapitalBryan SchreierPartner at Sequoia CapitalDavid DworskyPrincipal at Emergence Capital PartnersGeorge KuntharaInvestor at Emergence Capital PartnersJustin GageVP of Marketing at Amplify PartnersSerena LiuInvestor at Hummingbird Ventures
+ 10 more
Also worked at Robinhood74
Vlad TenevCo-founder & CEO of RobinhoodJan HammerInvestor at Index VenturesSangeen ZebInvestor at GV (Google Ventures)Arpan ShahInvestor at Spark CapitalNick ZurickTalent Lead at Pantera CapitalAustin HayInvestor at Khosla Ventures
+ 68 more
Also worked at Google1,715
Ron ConwayFounder of SV AngelElad GilSolo general partner investing through Gil CapitalKai-Fu LeeChairman of Sinovation Ventures and CEO of 01.AIBrian SingermanCo-founder of GPx; Partner Emeritus at Founders FundJess LeePartner and Chief Product Officer at Sequoia CapitalTomasz TunguzFounder & General Partner at Theory Ventures
+ 1,709 more