Marcus Foster
FounderFounder/CEO at Klarismo
San Francisco, California, United States
FoundedKlarismo · YC
Find your path to Marcus
1,100 people in our graph share verified history with Marcus — schools, employers, funds. One of them is your warm intro.
Nancy WangunlockedMarcus: together at Google (2014)
×4Marcus: together at Google
×2Marcus: together at Atomico
Marcus: together at The London School of Economics and Political Science (LSE)
About
Marcus Foster led product teams at Google, Apple, GRAIL, Yahoo, and Q Bio before founding Klarismo.
Founder/CEO at KlarismoYC S15
Intro paths
YC
Marcus went through Y Combinator (Summer 2015) — any YC alum in your network can reach them through the YC community.
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In turn, Marcus can intro founders to Klarismo's investors below.
Experience
- KAYMOFounder & CEOcurrent2025 — presentSan Francisco
- AppleHealth Engineering Program Manager2024 — 2025Cupertino
- Q BioDirector of Product Management2020San Carlos, California, United States
- GRAIL, Inc.Director of Product Management2017 — 2020Menlo Park and London
- KlarismoFounder & CEO (YC S15)2014 — 2017London and San Francisco
- AtomicoExecutive in Residence2014 — 2015London
- GoogleProduct Manager2006 — 2014London
- Yahoo! IncDirector / Product Lead1999 — 2006London
Skills & more
Getting to YesTeam LeadershipRelationship BuildingLeadershipCommunicationStrategy8PerlApacheGlobal System for Mobile Communications (GSM)Objective-CPython (Programming Language)Amazon Web Services (AWS)
+12 more
Google AdsGoogle Cloud Platform (GCP)Enterprise SoftwareMathematicaAndroidPulse OximetryTechnical DirectionQuality SystemBiomarkersCancer BiologyCancer ScreeningDICOMLanguages English · German · Spanish
- Introduction to the Biology of Cancer — Coursera
- Introduction to Genomic Technologies — Coursera
From Marcus's professional profile.
Frequently asked questions
- Who is Marcus Foster?
- Marcus Foster led product teams at Google, Apple, GRAIL, Yahoo, and Q Bio before founding Klarismo.
- Where does Marcus Foster work?
- Marcus Foster is Founder/CEO of Klarismo.
- What companies did Marcus Foster found?
- Marcus Foster founded Klarismo.
- Where did Marcus Foster go to school?
- Marcus Foster studied at Y Combinator; The London School of Economics and Political Science (LSE) (Master's Degree, Social Psychology); Universität der Künste Berlin (Master of Arts - MA, Communication and Media Studies).
Founder mafias
Y Combinator mafia10,230
Also came through, then founded or led a company.
Sam AltmanPresidentFounded Tools for Humanity +3Garry TanPresident & CEOFounded Y Combinator +1Jessica LivingstonCo-founderFounded Y CombinatorAlexis OhanianPartnerFounded RedditFred EhrsamYC Summer 2012Founded Nudge +1Matt HuangYC Winter 2011Founded Paradigm +1
+ 10,223 more
The London School of Economics and Political Science (LSE) mafia340
Also came through, then founded or led a company.
Anne OsdoitCorporate Finance & Strategy - Executive summer schoolFounded Moon Surgical +2Henson OrserGeneral CourseFounded Soter +2Logan J HendersonSummer CertificateFounded Gridline Holdings +2Toby TriebelBsCFounded Spotcap +1Shaoib MakaniBScFounded Motive Technologies +1Steve LoughlinCertificateFounded RelateIQ +1
+ 333 more
Apple mafia306
Also came through, then founded or led a company.
Steve JurvetsonProduct MarketingFounded Future Ventures +1Kai-Fu LeeVice president (last job)Founded 01Brian ActonHardware Test EngineerFounded WHATS APP +1IanUser Experience and EngineeringFounded Apex Technology +3Jon LernerSoftware Engineer (Intern)Founded Textnow +2Brian BrackeenSr. Project ManagerFounded Lightship +1
+ 299 more
Universitat Autònoma de Barcelona mafia29
Also came through, then founded or led a company.
Carlos BlancoMaster en MultimediaFounded Nuclio Founders +1Evan WaldenStudy AbroadFounded Findem +1Jordi Carreras-PuigvertMaster of Science (M.Sc.)Founded Pixl +1Pieterjan BoutenMaster's Degree (Erasmus Program)Founded ShowpadEduardo NarvaezEnvironmental economicsFounded Tiriel AISophia AljCertificateFounded Chari
+ 22 more
Humboldt-Universität zu Berlin mafia25
Also came through, then founded or led a company.
Matti NiebelschuetzDiplomFounded Rocket Internet +1Frederik MerzBachelor of ScienceFounded Ampere +1Christian BeedgenAssociate’s DegreeFounded Perpetualsystems +1Daniel HöpfnerBusiness Administration / EconomicsFounded pressmatrixFritz SeidelBetriebswirtschaftFounded Boomerang IdeasChrist XuFounded Rational
+ 18 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 VenturesCollin WallaceGeneral Partner at Lobby CapitalVictor SantosVictor Scout at One Way Ventures
+ 1,994 more
Also attended Humboldt-Universität zu Berlin99
Theresa TongOperations Manager at FusionEvaLegal at NAPSusanna SzwajaWorkplace Managerin & Event Support at RedstoneJana GranigSenior Finance Manager at FoodLabsIsabelle ThierfelderSenior Investment Manager at Seed+SpeedNelly KarschAssociate at Seed+Speed
+ 93 more
Also attended Universitat Autònoma de Barcelona128
Eduard FeliuManaging Partner at Inveready Technology Investment GroupMar FernándezMarketing & Communications Manager at Inveready Technology Investment GroupNash Carey-EwendSenior Associate, Echo Health Advisors at Echo Health VenturesAgustina NietoLegal Counsel at Nauta CapitalIsabel JimenezPrincipal at Asabys PartnersDr. Benedikt BuchspiesPrincipal - Technology Research and Science at Planet A Ventures
+ 122 more
Shared employers
Also worked at Q Bio4
Also worked at GRAIL, Inc.22
Cathy FriedmanInvestor at GV (Google Ventures)Denise KnoppingVP of People at Longitude CapitalEric KleinInvestor at Sand Hill AngelsTom RodgersMcKesson EVP, Chief Strategy Officer at McKesson VenturesMatthew YoungManaging Director at Longitude CapitalSue XuManaging Partner at Amino Capital
+ 16 more
Also worked at Atomico70
Niklas ZennströmCo-founder and CEO of AtomicoJosefin LandgårdCo-founder & CEO of MANTLE; co-founder of KryMattias LjungmanInvestor at Moonfire VenturesSanna BlomkvistSustainability Lead at NorthzoneWouterHead of Nomads (Fund-of-Fund) at Hummingbird VenturesAndrea GurnariInvestor at Moonfire Ventures
+ 64 more
Also worked at Google2,000
Kai-Fu LeeChairman of Sinovation Ventures and CEO of 01.AIBrian SingermanCo-founder of GPx; Partner Emeritus at Founders FundHunter WalkCo-founder & Partner at HomebrewAydin SenkutFounder & Managing Partner at FelicisLaela SturdyManaging Partner at CapitalGArash FerdowsiCo-founder of Dropbox
+ 1,994 more