AI-Driven UI Designer & Design System Lead

Proton.ai in Cambridge, United Kingdom is seeking a UI Product Designer to shape how Proton looks and works. You will ship in a squad with PMs and engineers, and you’ll be in front of customers to learn from their use and bring back insights.

You will build an AI-native UI, own the design system across four products, and prototype in real code using Claude Code and Cursor. This role blends craft, systems thinking, and close customer collaboration.

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