Lennert Jansen
FounderFounder at Airweave
San Francisco, California, United States
FoundedAirweave Β· YC
Find your path to Lennert
665 people in our graph share verified history with Lennert β schools, employers, funds. One of them is your warm intro.
Aydin SenkutunlockedLennert: together at Adyen (2020)
Lennert: together at IBM
Lennert: together at University of Amsterdam
Γ8Lennert: together at Y Combinator
About
Founder of Airweave, a context retrieval layer that enables AI agents and RAG systems to access information across multiple apps, tools, and databases through a unified interface.
Founder at AirweaveYC X25
Intro paths
YC
Lennert went through Y Combinator (Spring 2025) β any YC alum in your network can reach them through the YC community.
GP
Their group partner at YC was Aaron Epstein, General Partner at Y Combinator β the partner who ran Airweave's batch and knows the company first-hand. YC profile β
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In turn, Lennert can intro founders to Airweave's investors below.
Airweave's investors Β· 7
Co-founders at Airweave
RA
Rauf AkdemirFounder
Experience
- AirweaveCo-Foundercurrent2025 β presentSan Francisco, California, United States
- Kurashi CollectiveCo-Founder2022 β 2025Amsterdam, North Holland, Netherlands
- AttendiAI Engineer2023 β 2024Amsterdam, North Holland, Netherlands
- AmazonAI Research Intern2022Berlin, Germany
- Institute for Logic, Language and Computation (ILLC) - University of Amsterdam (UvA)Research Assistant2021Amsterdam, North Holland, Netherlands
- Randstad Groep NederlandData Science Intern2021Amsterdam Area
- AdyenData Science Intern2020The Randstad, Netherlands
- IBMAI Research Intern2019The Randstad, Netherlands
- WeTeachTeacher of Statistics and Mathematics2015 β 2017The Randstad, Netherlands
Skills & more
Python9Econometrics18Mathematics14English20R3Matlab5Dutch11Economics7LaTeX6Teaching5Statistics3Probability Theory3
+3 more
SQLMachine LearningBayesian statisticsLanguages Dutch Β· English Β· German Β· Papiamentu Β· Spanish
From Lennert's professional profile.
Frequently asked questions
- Who is Lennert Jansen?
- Founder of Airweave, a context retrieval layer that enables AI agents and RAG systems to access information across multiple apps, tools, and databases through a unified interface.
- Where does Lennert Jansen work?
- Lennert Jansen is Founder of Airweave.
- What companies did Lennert Jansen found?
- Lennert Jansen founded Airweave.
- Where did Lennert Jansen go to school?
- Lennert Jansen studied at Y Combinator; University of Amsterdam (Master of Science - MS, Artificial Intelligence); Erasmus School of Economics (Master of Science - MS, Econometrics).
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
University of Amsterdam mafia74
Also came through, then founded or led a company.
Job van der VoortBScFounded Remote Technology +1Helmuth van EsDoctor of Philosophy (PhD)Founded Antabio +2Sebastian BrunemeierMScFounded Cyclone Therapeutics +1Ingrid van WelieBachelor's degreeFounded Neural Dynamics Technologies +1Daniel HavenFounded Slauth.io +1David WylerBachelor's degreeFounded Kairos +1
+ 67 more
Adyen mafia13
Also came through, then founded or led a company.
Alessandro PisciniHead of Reporting & ForecastingFounded Crea +1Thijn LamersEVP Global SalesFounded NoahEmiel van LiereTeam LeadFounded QuestWilco KruijerSoftware EngineerFounded ReJotJan SchutteData Platform EngineerFounded ReJotSunjeet ChughApplied AIFounded Clerked
+ 6 more
Erasmus School of Economics mafia6
Also came through, then founded or led a company.
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 University of Amsterdam309
Job van der VoortCo-founder & CEO of RemoteMartijn KleijwegtInvestor at LSP (Life Sciences Partners)TorjusInvestor at InvestinorDamien van der BijlInvestment Director at Capricorn Venture PartnersAndrea van ElsasInvestor at Third Rock VenturesFreya WordsworthAssociate at Nauta Capital
+ 303 more
Also attended Erasmus School of Economics44
Maximilian SamneInvestor at EQT VenturesPaul van OoikInvestment associate at NoaberKoen van BleekFinance and compliance at PeakVincent CoonInvestor at HV CapitalGabriele TinelliInvestments at FoundamentalLise van MourikInvestment Analyst at Capital Mills
+ 38 more
Shared employers
Also worked at Airweave1
Also worked at Amazon1,091
Apoorva MehtaFounder of Instacart; founder of Cloud Health SystemsBinny BansalCo-founder of Flipkart; co-founder of PhonePe and OppDoorBrad PorterFounder & CEO of Collaborative RoboticsJane MooneyCo-founder & VP, Strategy and Finance at Collaborative RoboticsNick FrosstCo-founder of CohereViswa SankaranarayananVenture Partner at Monta Vista Capital
+ 1,085 more
Also worked at Adyen25
Aydin SenkutFounder & Managing Partner at FelicisJan HammerInvestor at Index VenturesThijn LamersInvestor at FELIX CAPITALYoussef HounatAdvisor at Curiosity VCBeau-Anne ChillaPartner at FORWARD.oneThom CraanenInvestment Associate at Holland Capital
+ 19 more
Also worked at IBM1,519
Brian ArmstrongCo-founder & CEO of CoinbaseOlivier PomelCo-founder & CEO of DatadogAlexis Le-QuocCo-founder & CTO of DatadogKen ChenaultInvestment Team at General CatalystRoger KrakoffGeneral Partner at Monta Vista CapitalAvi BharadwajInvestment Director at Intel Capital
+ 1,513 more