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About
William Barthell is co-founder and CTO at Janet AI. Previously, he was the first engineer at a cryptocurrency startup where he worked on automated market maker design for Solana token trading, and holds a bachelor's degree in computer science from UW-Madison.
CTO at Janet AIYC S25
Intro paths
William went through Y Combinator (Summer 2025) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Tyler Bosmeny, General Partner at Y Combinator — the partner who ran Janet AI's batch and knows the company first-hand. YC profile ↗
In turn, William can intro founders to Janet AI's investors below.
Janet AI's investors · 3
Co-founders at Janet AI
Frequently asked questions
- Who is William Barthell?
- William Barthell is co-founder and CTO at Janet AI. Previously, he was the first engineer at a cryptocurrency startup where he worked on automated market maker design for Solana token trading, and holds a bachelor's degree in computer science from UW-Madison.
- Where does William Barthell work?
- William Barthell is CTO of Janet AI.
- What companies did William Barthell found?
- William Barthell founded Janet AI.
Founder mafias
Y Combinator mafia10,594
Also came through, then founded or led a company.
About this profile. Compiled from public sources — Janet AI'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