About
Ruben studied computer science at EPFL and conducted research on compiler design at Stanford. He has experience building distributed systems at Palantir, leading engineering at a multi-party computation startup, and contributing open-source projects. He now leads Windmill, an open-source workflow automation platform.
Founder at WindmillYC S22
Intro paths
YC
Ruben went through Y Combinator (Summer 2022) — any YC alum in your network can reach them through the YC community.
GP
Their group partner at YC was Nicolas Dessaigne, General Partner at Y Combinator — the partner who ran Windmill's batch and knows the company first-hand. YC profile ↗
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In turn, Ruben can intro founders to Windmill's investors below.
Experience
- WindmillFoundercurrent2021 — presentParis, Île-de-France, France
- The Forecasting CompanyAngel Investorcurrent2025 — present
- MetriportAngel Investorcurrent2022 — present
- DepotAngel Investorcurrent2022 — present
- LagoAngel Investorcurrent2022 — present
- InpherSoftware Engineering Lead2019 — 2022
- Palantir TechnologiesSoftware Engineer2017 — 2019London Area, United Kingdom
- Skymind.io - Deep learning for IndustrySoftware Engineer Intern2016San Francisco Bay Area
Frequently asked questions
- Who is Ruben Fiszel?
- Ruben studied computer science at EPFL and conducted research on compiler design at Stanford. He has experience building distributed systems at Palantir, leading engineering at a multi-party computation startup, and contributing open-source projects. He now leads Windmill, an open-source workflow automation platform.
- Where does Ruben Fiszel work?
- Ruben Fiszel is Founder of Windmill.
- What companies did Ruben Fiszel found?
- Ruben Fiszel founded Windmill.
- Where did Ruben Fiszel go to school?
- Ruben Fiszel studied at Y Combinator; Stanford University (Visiting Student Researcher, CS); EPFL (Master of Science, Computer Science).
Founder mafias
Y Combinator mafia8,773
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Y Combinator mafia4,716
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Stanford University mafia903
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Peter ThielJ.D.Founded PayPal +1Reid HoffmanB.S.Founded LinkedIn +2Joe LonsdaleBSFounded Opto +3Mike Maples JrBSFounded Pattern BreakersSteve JurvetsonMSEEFounded Mojo VisionBalaji SrinivasanGraduate StudentFounded Counsyl +1
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The Johns Hopkins University mafia58
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Christoph LengauerPostdocFounded Celsius Therapeutics +2Anne OsdoitMaster of Science (MS)Founded Moon Surgical +2Andrew LevyBachelor of Science (B.S.)Founded Apteligent +2Matt MichelsonB.S.Founded Evid Science +1Merrill AnovickB.A. with HonorsFounded Lynd Clinical +1Kanishk ParasharBSFounded Powder +1
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EPFL mafia55
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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
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Also attended Stanford University2,000
Peter ThielCo-founder & Partner at Founders FundReid HoffmanCo-founder of LinkedIn; Partner at GreylockDavid SacksCo-founder & General Partner at Craft Ventures; former White House AI & Crypto CzarKeith RaboisManaging Director at Khosla VenturesGarry TanPresident & CEO of Y CombinatorAlfred LinPartner at Sequoia Capital
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Also attended EPFL104
Raquel UrtasunFounder & CEO of WaabiSteve AnaviCo-founder & President of QontoBouraux LeopoldAI & Data Engineer at Newfund CapitalJan-Olivier FillolsSenior Managing Director at Marlin Equity PartnersChristoph FreiPartner, Head of Energy at Emerald Technology Ventures AgArzu TekirGeneral Partner at Treeo VC
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Also attended The Johns Hopkins University261
Wes NicholsPartner at March Capital PartnersDemi ObayomiPrincipal at Sapphire VenturesJun JeonInvestor at Khosla VenturesNicole FraenkelInvestor at Khosla VenturesElena VibochManaging Director at General CatalystScott RubinVenture Partner at Lux Capital
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Shared employers
Also worked at The Forecasting Company5
Also worked at Metriport3
Also worked at Lago3
Also worked at Palantir Technologies220
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