Senior Design Engineer - Design System & Platform UI

About this role

About the Team The Design System team owns Click UI - the open-source Design System of ClickHouse. It is the shared UI foundation for ClickHouse Cloud and several other projects. We operate the system as a service and as the clear entry point for all ClickHouse UI work. We focus on building React components that are accessible, performant, well-documented, token-driven, and capable of resolving challenging product requirements.

What You Will Do - Research, build, and maintain accessible React components and their APIs on headless accessibility (WCAG 2.2 AA) primitives. Keyboard interaction, focus management, and theming are part of each component from the start. - Work on the library enhancements, focusing on consistent and intuitive components API and developer experience improvements. Enable complex migrations with codemods and semantic versioning.

- Maintain the shared reliable infrastructure: Storybook, unit, interaction E2E and visual regression tests, accessibility gates, and a reliable release process. - Drive adoption: high quality documentation, usage guidelines, migration guides, issue intake and triage (including open-source issues), and code review with product teams. - Build the AI-assisted layer: Figma-to-code, component scaffolding, and guardrails that keep AI-generated UI on-token, on-pattern, and accessible.

What We Are Looking For - Experience: 6+ years of frontend engineering. You have built or maintained a production design system that multiple teams use, including its migrations and breaking changes. - Core Stack: Deep knowledge of React, TypeScript, semantic HTML, and CSS architecture at scale (SASS, CSS Modules, CSS variables, CSS-in-JS). Experience with component API design (atomic design, composition, controlled and uncontrolled, polymorphic patterns) and headless primitives such as React Aria, Ark UI or Radix.

- Accessibility and Tokens: Working knowledge of WCAG 2.x and WAI-ARIA. You implement and test keyboard navigation, focus management, and screen-reader behavior yourself. Experience with design-token architecture and tools (Style Dictionary, Terrazzo, DTCG, or equivalent) and Figma variables sync. - System Mindset: You treat the design system as a product with internal customers. You write clear documentation, review for consistency across the library, and mentor through code review.