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Jeff Hara

Founder

CTO at JustAI

San Francisco, California, United States

FoundedJustAI · YC

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About

Previously a senior machine learning engineer at Twitter and Automattic, with earlier ML work at Mercari and a stint as Founder-in-Residence at Foundations. He began his career at Stanford, working as a software engineer at the Center for the Study of Language and Information and as a research assistant in the Computer Graphics Laboratory.

CTO at JustAIYC W24

Intro paths

YC

Jeff went through Y Combinator (Winter 2024) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Pete Koomen, General Partner at Y Combinator — the partner who ran JustAI's batch and knows the company first-hand. YC profile ↗

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In turn, Jeff can intro founders to JustAI's investors below.

JustAI's investors · 9

Band of AngelsSan FranciscoBase10 PartnersSan Francisco · $100K – $5M checks · since 2026Cloud CapitalWashingtonCreative HQ — The IncubatorWellingtonJ&T VenturesPrague · $300K – $3M checksLobster CapitalSan FranciscoPeak XV PartnersBengaluru · $100K – $10M checks · since 2026SurgeTrianon · $500K – $5M checksY CombinatorSan Francisco · $500K checks · since 2024

Co-founders at JustAI

NMNeha Mittal
Neha MittalCEO

Frequently asked questions

Who is Jeff Hara?
Previously a senior machine learning engineer at Twitter and Automattic, with earlier ML work at Mercari and a stint as Founder-in-Residence at Foundations. He began his career at Stanford, working as a software engineer at the Center for the Study of Language and Information and as a research assistant in the Computer Graphics Laboratory.
Where does Jeff Hara work?
Jeff Hara is CTO of JustAI.
What companies did Jeff Hara found?
Jeff Hara founded JustAI.

Founder mafias

About this profile. Compiled from public sources — JustAI'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