Senior Design Engineer, Design System

About the role

Celonis builds a process intelligence platform whose design system is the contract that keeps AI-generated UI consistent, accessible and on brand. This senior role sits at the intersection of design, engineering and product, with a strong emphasis on craft, usability and scalability. You will design and build the system itself, own interaction decisions and front-end architecture, and often work with minimal design oversight.

Key responsibilities

• Design and build production components in Angular and TypeScript, on a foundation of semantic HTML and CSS with modern custom properties for design tokens.
• Own interaction decisions, component design and front-end architecture end to end, translating ambiguous requirements into usable UX.
• Translate complex process-intelligence data and AI-driven behaviors into clear, intuitive operator experiences.
• Set the technical and craft standard for quality, polish, motion, performance and accessibility across the team.
• Drive rapid prototyping and collaborate with designers, PMs and engineers to evolve the design system.
• Make the system agent-ready: maintain tokens-as-code in the W3C DTCG format (Style Dictionary or similar) and structure component metadata, docs and APIs for AI coding agents.
• Maintain Figma Code Connect mappings and build evals (visual regression, accessibility, token compliance) in CI.
• Use AI design and coding tools daily and lead system initiatives while mentoring designers and engineers.

Required profile

• Around 5-8 years in design engineering, UX engineering or front-end, including hands-on work on a design system or component library in a SaaS or B2B environment.
• Strong UX instincts and the ability to own design decisions independently with minimal oversight.
• Demonstrated accessibility expertise (WCAG 2.2) implemented in code.
• Strong product mindset, ownership and the communication and leadership of a senior individual contributor.

Required skills

• Production front-end skills in Angular and TypeScript, with solid HTML and CSS; React is a plus.
• Deep understanding of design token architecture and token pipelines.
• Strong Figma fluency and fluency with AI design and coding tools.
• Bonus: Figma Code Connect, MCP servers, evals for AI-generated UI, Style Dictionary or Tokens Studio.

What we offer

• Restricted Stock Units (RSUs) and merit-based refresh grants.
• Parental leave: 24 weeks fully paid for primary carers and 12 weeks for supporting carers.
• Unlimited PTO in applicable regions and a flexible hybrid work model.
• Learning through a 70-20-10 framework, mentorship and a dedicated learning platform.
• Wellbeing support, including Wellhub membership, mental health counseling and Wellness Weeks.
• Paid time off for volunteering in Impact Days, plus inclusion and diversity events.