Product Designer (UX/UI, AI)

Location: Berlin, Germany; in-office

Salary: €70,000–€110,000 base per year plus meaningful equity

Company

HASH develops an open-source platform that integrates structured and unstructured information into knowledge graphs for simulating, optimizing, and automating processes.

What you will do

• Own and evolve a scalable Figma design system with components, tokens, typographic styles, and documentation.
• Translate user stories into journey maps, wireframes, high-fidelity designs, and production-ready interfaces.
• Design intuitive interfaces that help non-technical users model real-world processes and work with complex underlying concepts.
• Build interactive Figma and web prototypes to validate flows and micro-interactions with users.
• Facilitate design critiques and collaborate with engineers to ensure accurate implementation.
• Champion accessibility and inclusive design across typography, color, motion, and copy.

Requirements

• Experience designing complex web applications with a modern design-system mindset.
• Advanced Figma expertise, including variants, tokens, shared styles, and auto-layout.
• Strong visual design and systematic thinking across typography, color, and grids.
• Ability to prototype at multiple fidelities and explain design rationale to technical and non-technical stakeholders.
• Solid understanding of WCAG 2.2 and practical accessibility techniques.
• Excellent written and verbal English and comfort working in an asynchronous, documentation-heavy environment.

Nice to have

• Experience with data-dense products, simulations, modeling, analytics, AI interactions, or user-built views and models.
• Hands-on UX research experience, including workshops, study planning, analysis, and translating findings into actions.
• Interest in real-time collaboration and multiplayer editing UX patterns.

Culture & Benefits

• High-commitment, high-trust, in-person working environment focused on speed and output.
• Employer pension contributions.
• 20 days of paid flexible leave plus Berlin public holidays.
• Twice-yearly in-person team retreats around the world.
• Equity-weighted total compensation with tax-advantaged options.