Lennert Jansen
InvestorFounderCEO at airweave
San Francisco, California, United States
Foundedairweave · YC
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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.
CEO at airweaveYC X25
Intro paths
Lennert went through Y Combinator (Spring 2025) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Aaron Epstein, General Partner at Y Combinator — the partner who ran airweave's batch and knows the company first-hand. YC profile ↗
In turn, Lennert can intro founders to airweave's investors below.
airweave's investors · 16
Co-founders at airweave

Investments
Investor
Per curated public sources.
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 CEO of airweave.
- What companies did Lennert Jansen found?
- Lennert Jansen founded airweave.
- What companies has Lennert Jansen invested in?
- Investments tracked here include Better Auth.
Founder mafias
Y Combinator mafia10,594
Also came through, then founded or led a company.
IBM mafia657
Also came through, then founded or led a company.
University of Amsterdam mafia95
Also came through, then founded or led a company.
Adyen mafia14
Also came through, then founded or led a company.
Erasmus School of Economics mafia7
Also came through, then founded or led a company.
About this profile. Compiled from public sources — airweave's own website and public professional profiles — and summarised by Fundraising Fox; every fact is kept with where it came from. Spotted an error, or would rather not be listed? Email privacy@fundraisingfox.com · How we build profiles · Your rights





































