Simile
A foundation model for human behavior — 'synthetic users' that predict how people react
Last verified August 15, 2026 · Updated daily
What Simile is building
Simile builds a foundation model for human behavior — think 'synthetic users' you can run experiments on before touching real customers. Companies use 'agentic twins,' generative AI agents grounded in real human interview and behavioral data, to test products, marketing, pricing, or policy decisions on a simulated population before real-world rollout. It ships with a first-of-its-kind confidence model that predicts how accurate each simulation is. CVS built 100,000 AI patient twins from 2.9M records to test pharmacy experiences, replicating in hours what took months. Simile grounds its agents in consented real human data rather than generic LLM personas, which is the fidelity claim it competes on.
Why this matters
Greenoaks (Stripe, Figma, Nubank, Brex) leading a $200M round five months after a $100M Series A is a conviction signal you rarely see. CEO Joon Sung Park is the Stanford researcher behind the landmark 'Generative Agents'/'Smallville' work. The stated mission: simulate all eight billion people on Earth, accurately. Know the key benchmark and its caveat: per Park et al. (arXiv:2411.10109), the generative agents 'replicate participants' responses on the General Social Survey 85% as accurately as participants replicate their own answers two weeks later,' based on agents built from qualitative interviews with 1,052 real individuals — impressive, and exactly the number skeptics will probe.
Open roles at Simile
5 positions we're tracking. Roles are re-checked daily and removed when filled.
GTM Recruiter
First seen last month
Research – Member of Technical Staff
First seen last week
Infrastructure Engineer – Member of Technical Staff
First seen last week
Product Engineer – Member of Technical Staff
First seen last week
Deployment Strategist
First seen last week
Hiring outlook
$200M in the bank, 5x revenue growth, and an explicit statement that they're hiring researchers, engineers, designers, and operators. Roughly 9 roles are posted on their Ashby board across SF and NYC. This is a hypergrowth hire-everyone moment with a $2B valuation cushion.
Working at Simile
Simile is A foundation model for human behavior — 'synthetic users' that predict how people react, founded in and now 50-200 people. At this stage, expect defined function but no bureaucracy, you'll own a surface area rather than a ticket queue.
Palo Alto & New York is where most Simile positions are located.
Frequently asked questions
How many jobs does Simile have open?
We're tracking 5 active openings at Simile (verified July 2026).
Does Simile hire remotely?
Currently, Simile only has in-office roles in Palo Alto & New York.
What roles is Simile hiring for?
Simile is hiring across Design, Other, Engineering. The most recent opening is GTM Recruiter.
How do I apply for a job at Simile?
Click through to apply, or see our detailed guide on landing a job at Simile.
Where is Simile based?
Simile is headquartered in Palo Alto & New York.
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