About HASH

About the role

What you'll work on

• Own our Figma design system: produce scalable components, typographic styles, tokens, and documentation for use across multiple high-calibre internal and external teams
• Translate user stories into journey maps, wireframes, and polished UI ready for user testing cycles, and later production
• Develop intuitive, informative interfaces which enable non-technical users to create models of real world processes, providing abstractions and assistance on top of the complexity of the underlying theory
• Build interactive prototypes (Figma/Web) to validate flows and micro-interactions with test users
• Facilitate design critiques and collaborate closely with engineering to ensure design intent is faithfully realized
• Champion accessibility and inclusive design across typography, color, motion, and copy

Requirements

Must have

• Demonstrable experience designing complex web apps with a modern design-system mindset
• Advanced mastery of Figma: beyond ordinary component libraries, variants, tokens, shared styles, and auto-layout
• Strong visual craft (typography, colour, grid) paired with systematic thinking
• Comfort prototyping at multiple fidelities and presenting rationale to technical and non-technical stakeholders
• Solid understanding of WCAG 2.2 and pragmatic accessibility techniques
• Excellent written & verbal English; thrive in async, documentation-heavy culture

Nice to have

• Experience designing data-dense products (simulations, modeling, analytics), AI-user interactions, or user-built views and models (e.g. process flows, dashboards).
• Hands-on UX research: facilitating questionnaires/workshops, planning studies, analysing insights, turning findings into action
• Interest in real-time collaboration (i.e. multiplayer editing) and how it shapes UX patterns

Benefits

• Employer pension contributions
• 20 days paid flexible leave, plus Berlin public holidays
• Twice-yearly in-person team retreats around the world