Fundraising Fox

Effy Zhang

Founder

Founder at Baserun

San Francisco, California, United States

FoundedBaserun · YC

About

Effy Zhang is founder of Baserun, which provides testing and observability tools for LLM applications.

Founder at BaserunYC S23

Intro paths

YC

Effy went through Y Combinator (Summer 2023) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Harj Taggar, General Partner at Y Combinator — the partner who ran Baserun's batch and knows the company first-hand. YC profile ↗

→

In turn, Effy can intro founders to Baserun's investors below.

Baserun's investors · 1

Y CombinatorSan Francisco · $500K checks · since 2023

Experience

  1. AnthropicMember of Technical Staffcurrent2025 — presentUnited States
  2. Stealth StartupCo-Founder2025San Francisco Bay Area
  3. baserunCEO & Founder2023 — 2024San Francisco Bay Area
  4. CruiseStaff Product Designer2020 — 2023San Francisco Bay Area
  5. SquareSenior Product Designer2015 — 2020San Francisco, California
  6. Gray Area Foundation For The ArtsTeaching Assistant2016 — 2017San Francisco Bay Area
  7. Samsung Electronics AmericaInteraction Design Intern2015New York City Metropolitan Area
  8. Samsung Electronics AmericaInteraction Design Intern2014san jose, california
  9. THRE3DProduct Designer2013Beijing
  10. Crystal AsiaWeb Designer2012Beijing
  11. Condé NastFreelance Illustrator2011 — 2012Beijing, China
  12. Beijing Design WeekAssistant Project Manager2011Beijing, China
  13. Mobitide Technology Co,.LtdUI/UX intern2011Beijing

Skills & more

Interaction Design38Physical Computing11Graphic Design35Photoshop23Photography22User Interface Design22Web Design20User Experience33Industrial Design8Web Development4Usability Testing6Design Strategy1
+7 moreSwiftVirtual RealityProduct DesignData VisualizationUser Experience DesignAdobe Creative SuiteAdobe Photoshop

Languages Chinese · English

From Effy's professional profile.

Frequently asked questions

Who is Effy Zhang?
Effy Zhang is founder of Baserun, which provides testing and observability tools for LLM applications.
Where does Effy Zhang work?
Effy Zhang is Founder of Baserun.
What companies did Effy Zhang found?
Effy Zhang founded Baserun.
Where did Effy Zhang go to school?
Effy Zhang studied at School of Visual Arts (Master of Fine Arts (MFA), Interaction Design); Fullstack Academy (Computer Software Engineering); UploadVR (VR Development).

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

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 Zesty

+ 32 more

Cruise mafia34

Also came through, then founded or led a company.

Kyle VogtFounder/CEOFounded Twitch +1Daniel KanFounder/COOFounded Exec +1Oliver CameronVP, ProductFounded Everyme +1Matthew DeitersDirector of Product & Technical OperationsFounded Assembly Made +1Sohrab HaghighatPlanning and Controls, Senior Engineering ManagerFounded Hestus, Inc. +1Richard HeSenior Software Engineer - ML PlatformFounded Openmart +1

+ 27 more

CodePath mafia5

Also came through, then founded or led a company.

Dmitry BiruliaAndroidFounded Veryfi, Inc.Marty KausasiOS DevelopmentFounded PylonMichael LamiOS App DevelopmentFounded StuddyRodrigo TeránComputer ScienceFounded Dialogus

School of Visual Arts mafia4

Also came through, then founded or led a company.

Reid NahmIllustrationFounded CovetlyVivien SinPainting and Mixed Media Summer Art ResidencyFounded The Third PlaceYinka ElujobaMaster of Fine Arts - MFAFounded Plumter

Same school

Also attended School of Visual Arts15

Ashley LawSenior Director of Events at Redpoint VenturesMatt HoffExecutive Assistant at Lerer HippeauCharlotte SalaskyPartner, Investor Relations at Notion CapitalJessica NealOperating Partner at TCVStephanie PembertonPartner at MORRO VENTURESShira WhiteFounder, BeautifulNow at The 98

+ 9 more

Also attended Fullstack Academy4

Phil JacobSenior Associate at RampersandTom SharonFounder at CheqoutSam VermetteCo-founder & CEO at TransitDavid YangFounder/Lead Instructor at Fullstack Academy

Also attended CodePath6

Harrison DahmePartner, CTO at Hack VCFrancisco de la PeñaManaging Partner at InvertidosDmitry BiruliaFounder at Veryfi, Inc.Marty KausasFounder at PylonMichael LamFounder at StuddyRodrigo TeránFounder at Dialogus

Shared employers

Also worked at Stealth Startup375

Andrew ChenGeneral Partner at Andreessen HorowitzGabriel PereyraCo-founder & President of HarveyErica VanInvestment Director at Intel CapitalHemamAdvisor at Clear VenturesArhaan A.Deeptech Fellow at Clear VenturesHamish GarnettAssociate at Manta Ray Ventures

+ 369 more

Also worked at Gray Area Foundation For The Arts3

Ia BalbuenaOffice Manager at Reach CapitalBen WestPartner, Concept Development at JUXTAPOSE VENTURESAlona EspositoInvestor at VMG Partners

Also worked at Samsung Electronics America14

Lauren von ReynInvestor at LightbankHannah ShorePrincipal, Head of Network at StripesLucy StenovecSenior Associate, Talent & Network at StripesHelen LinHead of People Operations at Samsung NextScott CrabillManaging Partner at Thoma BravoAnna DohertyPartner at G9 Ventures

+ 8 more

Also worked at Condé Nast32

Alexis OhanianFounder & General Partner of Seven Seven SixErica VanInvestment Director at Intel CapitalJosephine LuschInvestment Associate at Burda Principal InvestmentsAlex ConstantinopleChief Marketing Officer at GreycroftAndrea EchstenkamperVP of Marketing at HeavybitBob RoeVP, Narrative Development at Sozo Ventures

+ 26 more