Senior Frontend Engineer - Design System

Jobtailor; Deutschland; Vor Ort; EUR 90.000 - 120.000; Vollzeit

Zusammenfassung

Jobtailor is seeking a senior frontend engineer to build and scale our design system, including component library, tokens, and docs, enabling product teams to craft consistent experiences.

You will extend the system for AI-assisted development, design APIs, ensure WCAG 2.2 AA accessibility, collaborate with design, product, and engineering, and own the developer experience from docs to Storybook and migrations.

Qualifikationen

• At least five years as a software engineer with three in senior level ownership of a design system used across products.
• Deep frontend expertise: HTML, CSS, JavaScript/TypeScript, strong React and modern build tooling.
• Strong command of component API design and developer experience for shared libraries.
• Experience or strong interest in making component libraries consumable by AI.
• Solid understanding of responsive design, cross-browser compatibility and web performance.
• Commitment to WCAG 2.2 AA / EN 301 549 accessibility and active accessibility practices.
• Strong craft, attention to detail, balancing design intent with engineering constraints.
• Strong communication and collaboration skills and passion for improving developer productivity and end-user experience.

Aufgaben

• Build, scale and evolve our design system with component library, tokens, and documentation.
• Extend design system for AI-assisted development with Storybook backbone and machine-readable interfaces.
• Design component APIs that resist misuse for AI and humans.
• Write high-quality frontend code (React/TypeScript) and raise the bar for component craft and consistency.
• Partner with design, product and engineering to take components to production-readiness.
• Ensure components are accessible by default and align with WCAG 2.2 AA.
• Own the developer experience of the design system including docs, guidelines, Storybook, versioning and migrations.
• Implement theming, white labeling, and localization/RTL support for a global audience.
• Continuously improve the system based on adoption metrics and feedback.
• Shape the technical direction and champion adoption across teams.

Kenntnisse

Frontend expertise

React

TypeScript

API design

Accessibility

Team collaboration

Tools

Storybook

Testing tooling

Jobbeschreibung

Responsibilities

• Build, scale and evolve our design system: the component library, design tokens, and documentation that give product teams a consistent, accessible foundation to build on.
• Extend our design system for AI‑assisted development so AI coding tools and agents can use our components, tokens and guidelines as easily as people can, with Storybook as the backbone and machine‑readable interfaces (e.g. MCP) layered on top.
• Design component APIs that resist misuse, so AI and human developers alike can build with confidence.
• Write high‑quality, performant frontend code (React/TypeScript) and raise the bar for component craft and consistency across the engineering org.
• Partner closely with design, product and engineering to define components together and take them all the way to something that holds up in production.
• Make our components accessible by default, meeting WCAG 2.2 AA, and work closely with our Accessibility engineer to bake in best practices from the start.
• Own the developer experience of the design system: clear documentation, guidelines, Storybook, sensible component APIs, versioning and smooth migration paths that make adoption easy for both human and AI consumers.
• Implement and maintain theming, white labelling, and localization/RTL support so the system works for a global audience.
• Continuously improve the system based on adoption metrics, contributor feedback and new platform capabilities.
• Shape the technical direction of the design system over the next 6–12 months, championing its adoption across teams.

Qualifications

• At least five (5) years as a software engineer, including three (3) at senior level, building frontend platforms, with real ownership of a design system or shared component library used across multiple products.
• Deep frontend expertise: expert HTML, CSS and JavaScript/TypeScript, with strong React and familiarity with modern build tooling.
• A strong command of component API design, versioning and the developer experience of shared libraries.
• Experience (or strong interest) in making component libraries consumable by AI.
• Solid understanding of responsive design, cross‑browser compatibility and web performance.
• Comfortable building components to WCAG 2.2 AA / EN 301 549 and verifying them yourself with a keyboard and screen reader — accessibility is part of your definition of done, not a separate pass.
• A strong sense of craft and attention to detail, and the ability to balance design intent with engineering constraints.
• Strong communication and collaboration skills, and a passion for improving developer productivity and end‑user experience.