---
title: 'Product Psychologist at Slingshot AI'
canonical: 'https://feeny.ai/job/product-psychologist-slingshot-ai-london-2khyn4yrt2zn'
type: 'job'
last_seen: '2026-09-09'
---

# Product Psychologist at Slingshot AI

- **Company:** Slingshot AI
- **Location:** London, United Kingdom
- **Compensation:** £80k–£100k
- **Employment:** full-time
- **Posted:** 2026-09-09
- **Last confirmed live:** 2026-09-09
- **Apply:** https://jobs.ashbyhq.com/slingshotai/657d1a1d-4b89-4e09-93af-25bdc959688b

## Job description

Slingshot AI

Slingshot AI is the team behind Ash, the first AI designed for mental health. Our mission is to make support more accessible and help people change their lives in the ways they want.

We’re building a world-class team by empowering individuals with the autonomy, flexibility, and support they need to do their best work. We dream big, iterate fast, and care deeply. If that sounds like you, we’d love to hear from you.

Our team spans machine learning, product, engineering, conversational design, clinical, growth, and operations, with offices in both New York City and London.

We're a well-funded Series A company, having raised $93M from Andreessen Horowitz, Radical Ventures, Forerunner Ventures, plus top-tier tech investors involved in ElevenLabs, Captions, Shopify, Plaid, Notion, Canva, Twitch, Airtable, and many others.

## THE ROLE

We are hiring a Product Psychologist to sit inside our machine learning team to elaborate on and help further build processes that answer: what does a great Ash conversation look like, and how do you measure it?

Reporting to our Clinical R&D Lead and partnering closely our ML conversation team lead, you'll own the definition of quality for Ash's conversations and turn it into something the ML team can train and evaluate against through benchmarks, evals, and a distributed team of expert human reviewers.

We think optimizing for clinical protocols is the wrong lever. We believe the core driver of outcomes in mental health support, AI or human, is more amorphous: the things that set individual practitioners, rather than individual practices, apart. This role exists to build a science of that belief into something iterable.

This is not a role about designing conversations turn-by-turn. Ash is more grown than built. It's not a management role, though you'll coach a growing team of reviewers. And it's not a research role in the traditional sense. While you'll draw heavily on the literature, your aim is product outcomes, not papers published (though some of your work may become a paper in collaboration with our research team).

## KEY RESPONSIBILITIES

- Own the definition of "great" for Ash conversations, and make it measurable.
- Make hypothesis-driven calls on how Ash should behave, globally and in specific situations. Change your mind quickly and openly when the evidence tells you to.
- Partner with the Safety team to define Ash's constraints and how it should handle difficult edge-case conversations.
- Recruit, scale, and coach a distributed team of human reviewers: set the bar, teach people what "great" looks like, and keep the group calibrated with each other.
- Be a source of clarity for the conversation and ML teams when the path forward is ambiguous.

## ABOUT YOU

- You have a PhD in Clinical or Counseling Psychology, or related field, or a license-eligible Masters degree with clinical training and supervision
- You’re an experienced clinician with a history of working with systems, technological and otherwise, to scale up engaging and effective health products
- You have deep, hands-on experience with interpersonal skills. You can personally facilitate emotional expression well, and you can also see it in someone else's work: flexibility, warmth, honesty, confidence, and attunement, not just credentials.
- You're pragmatic and decisive under real uncertainty. You can make a call with incomplete information, defend it, and drop it fast when new evidence shows up.
- You're oriented toward the user, not toward an external clinical ideal. You won't push an agenda that matters more to you than it does to the people using the product.
- You've worked on measurement before, ideally in digital mental health, and you know how to build a rating system and keep a team of raters calibrated.
- You have some comfort operating close to an ML team. You don't need to train the models, but you should be curious about how evals and benchmarks actually get used to change model behavior.

What we offer:

- A chance to join a passionate tight-knit team working on something to change the world
- Competitive compensation (top of personal market)
- Travel between our NYC / London offices
- Usual startup perks like free lunch and coffee in office + generous learning budget
- We cover your personal therapy

## About Slingshot AI

## Company Overview
- **One-liner**: Slingshot AI is an AI research lab building the first foundation model for psychology, powering its consumer product "Ash," an AI designed for mental health support.
- **Entity Type**: Private (Series A)
- **Headquarters**: New York, New York, United States
- **Founded**: 2022
- **Founders**: Daniel Cahn and Neil Parikh

## Core Business
- Primary industry/industries: Mental Health AI, Wellness and Fitness Services
- Target customers: B2C (individuals seeking mental health support) and B2B (organizations needing AI-assisted crisis text response and AI counseling)
- Mission or purpose statement: "To make mental healthcare more accessible and help people change their lives in the ways they want."

## Products & Services
- **[Ash]**: The first AI designed for mental health. A consumer-facing product that functions as a conversational AI therapist, built on Slingshot’s proprietary foundation model for psychology. It focuses on increasing user autonomy, competence, and relatedness, integrating approaches like CBT, DBT, ACT, gestalt, and psychodynamic therapy.
- **[Foundation Model for Psychology]**: A task-specific generative model trained on large-scale psychological data, designed to respect individual value systems and cultural norms, powering both Ash and B2B use cases like AI-assisted crisis text response.

## Market Standing
- **Valuation/Market Cap**: Not disclosed
- **Key Metric**: Total Funding — $136M (across multiple rounds including seed and Series A)
- **Notable Investors/Partners**: Andreessen Horowitz (a16z), Radical Ventures, Forerunner Ventures, Felicis (led seed round), plus top-tier tech investors involved in ElevenLabs, Captions, Shopify, Plaid, Notion, Canva, Twitch, and Airtable. Also partnered with One Mind Accelerator.
- **Growth Signals**: 25,000+ beta testers (including many therapists); 50,000+ people have tested Ash; 80% headcount growth year-over-year (34 employees currently, up from ~16); offices in both New York City and London; active job postings up 33% year-over-year.

## Competitive Advantages
- **Unique foundation model for psychology**: Unlike general-purpose AI assistants, Slingshot’s model is purpose-built for mental health, integrating multiple therapeutic approaches (CBT, DBT, ACT, psychodynamic, gestalt) rather than a single "cure-all."
- **Strong clinical and ethical foundation**: The team includes a Clinical R&D Lead (Dr. Derrick Hull, formerly of Talkspace) and a Head of Safety (Mark Ungless), ensuring the product is built with clinical rigor and safety.
- **Respect for autonomy**: The AI is explicitly designed not to create dependency; it aims to increase the user’s sense of control and connection, differentiating it from other AI assistants.
- **Top-tier investor backing**: Backed by a16z and Radical Ventures, signaling strong confidence in the team and mission.

## Strategic Focus
- Scaling access to mental health support globally by continuing to train and improve their foundation model.
- Expanding the user base of Ash (currently free) and proving its efficacy at scale.
- Building a world-class team across ML, product, engineering, conversational design, clinical, growth, and operations in both New York and London.

## Why Work Here
- **Mission-driven work**: "Every action we take helps a real person, in the real world." The company is deeply focused on making a tangible impact on mental health.
- **Culture**: Values include "celebrate divergence and value authenticity," "move fast and embrace the unknown," "treat each other like adults," and "always in search of truth." Emphasis on autonomy, ownership, and fast iteration.
- **Work model**: In-office (employees work from physical offices in NYC or London). Offices are described as collaborative spaces with meals and drinks provided.
- **Perks**: Competitive salary, significant equity, unlimited holiday, L&D budget (courses/books/conferences), therapy coverage, private health insurance, company off-sites, office meals and drinks.
- **Team**: Small but growing fast (34 people, +80% YoY). Team spans multiple countries (US, UK, Canada) and departments (technical, product, design, clinical, operations). High ownership and impact for early employees.

## Sources
1. [slingshotai.com](https://slingshotai.com/)
2. [slingshotai.com/careers](https://slingshotai.com/careers)
3. [linkedin.com/company/slingshotai](https://www.linkedin.com/company/slingshotai)
4. [cbinsights.com](https://www.cbinsights.com/company/slingshot-6)
5. [builtin.com](https://builtin.com/company/slingshot-ai)

## Other roles at Slingshot AI

- [Head of Creative - Paid Social](https://feeny.ai/job/head-of-creative-paid-social-slingshot-ai-london-e3qrh0nhp7jm) — London, United Kingdom
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- [Creative Strategy Lead](https://feeny.ai/job/creative-strategy-lead-slingshot-ai-london-6gdchj3g3n5k) — London, United Kingdom
- [Social & Creator Intern (Science Communication)](https://feeny.ai/job/social-creator-intern-science-communication-slingshot-ai-london-fmh7bb1n8wbn) — London, United Kingdom
- [Postdoctoral Clinical Research Scientist](https://feeny.ai/job/postdoctoral-clinical-research-scientist-slingshot-ai-new-york-bnx7y52nhj90) — New York, NY
- [Chief of Staff, GTM](https://feeny.ai/job/chief-of-staff-gtm-slingshot-ai-new-york-t3edqnq4qx9t) — New York, NY
- [Member of Technical Staff, Mobile](https://feeny.ai/job/member-of-technical-staff-mobile-slingshot-ai-london-xq0xh7mqg6sv) — London, United Kingdom
- [Technical Ex-Founder](https://feeny.ai/job/technical-ex-founder-slingshot-ai-london-bwma1f7fn1zg) — London, United Kingdom