Product Designer | Stability AI Global Negotiation Guide
Negotiation DNA: Startup Comp with UK Base + Pre-IPO Equity | $1B+ Valuation | London HQ | Open-Source AI UX
| Region | Base Salary | Equity (Pre-IPO/4yr) | Bonus | Total Comp |
|---|---|---|---|---|
| London | £75K-£120K | £50K-£170K | — | £88K-£163K |
| San Francisco | $145K-$200K | $55K-$180K | — | $159K-$245K |
| Remote US | $131K-$180K | $50K-$162K | — | $143K-$221K |
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Get My Playbook — $39 →Negotiation DNA Product Designers at Stability AI design the interfaces that make open-source AI accessible to millions — the DreamStudio interface, the developer documentation, the model playground, and the enterprise product experiences. Design at Stability has a unique dual audience: professional developers who interact through APIs and casual users who need intuitive visual interfaces. The open-source ethos means design decisions have community-wide impact — your patterns become the standard for how people interact with open generative AI.
Level Mapping: Stability AI Product Designer = Google L4 UX Designer = UK Senior Product Designer
The UK Market Context London product design compensation at AI companies has risen sharply. Push for competitive rates.
Global Levers
- AI UX Innovation: "Designing accessible interfaces for open-source AI models requires pioneering new interaction paradigms. That design innovation: £115K base and £165K equity/4yr."
- Developer + Consumer UX: "Serving both developer and consumer audiences requires distinct design expertise. That dual capability: £110K base."
- UK Design Market: "Product designers at London AI companies earn £100K+. Stability: £115K base."
- US Remote: "For US-remote: $195K base and $175K equity/4yr."
Negotiate Up Strategy: "I'm a product designer with AI product and developer tools UX experience. Holding Google London at £100K / £160K RSU. For London: £115K base and £160K equity/4yr. US-remote: $195K base and $175K equity/4yr. Floor for London: £95K."
Evidence & Sources
- Levels.fyi UK product designer compensation at AI companies (2025-2026)
- Glassdoor Stability AI salary reports
- Blind verified London designer offers (2025-2026)
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