(Senior) Design System Engineer (f/m/d)

• Evolve, expand and maintain our component libraries on all our platforms (iOS, Android and Web): Angular, Jetpack Compose, SwiftUI fed by a shared design system.
• Partner closely with our UI/UX designers on component APIs, naming, states, and variants, keeping our code in sync with our Figma library - closing the gap between what is designed and what ships.
• Define the system's architecture: theming and brand layering, versioning, releases, and a contribution model that invites our domain teams in rather than shutting them out.
• Maintain living documentation (e.g. Storybook) and drive adoption through pairing, reviews, and migration paths.
• Make accessibility and responsive behavior built-in properties of our components, not an afterthought.
• Adopt agentic coding practices and use AI coding agents to accelerate development, while maintaining ownership of technical decisions, code quality, and outcomes.

• Several years as a frontend or mobile engineer, including hands-on ownership of a design system or shared component library used by multiple teams.
• TypeScript and Angular skills or comparable depth in another modern framework / library and a clear willingness to go all in on Angular plus a sharp instinct for component API design.
• Hands-on native UI development with Kotlin/Jetpack Compose or Swift/SwiftUI. You will author native components yourself. Strong expertise in one platform, combined with an interest in developing a working knowledge of the other, is perfectly fine.
• Experience with design tokens and theming multi-brand environments: building one system that carries several brands without forking.
• A strong grasp of responsive and adaptive design and of accessibility standards, and the habit of verifying both in practice.
• A product mindset toward internal tooling, you treat the design system and component libraries as a product with users and measure success by adoption. You enjoy enabling other teams and building consensus across engineering and design.

• State-of-the-art technologies and an agile environment (Check our Tech Radar: https://lotto24.github.io/tech-radar/)
• A modern, dynamic culture grounded in the success of a leading-edge e-commerce company.
• A talented team of ambitious, like-minded colleagues where your knowledge and ideas truly make an impact.
• Ongoing personal growth, supported by an annual development budget of €1,500 to invest in your professional development.
• Trust and autonomy, no micromanagement, just confidence in your ability to deliver and excel.
• Flexible work options with a hybrid setup focused on results.
• Unlimited vacation days in addition to your yearly 30-day vacation allowance.
• Opportunity for workations abroad using our WorkFlex tool.
• Monthly mobility allowance of €30 to use on the mobility option of your choice (e.g., the Deutschlandticket), plus access to a company bike leasing program.
• Company pension scheme, provided in partnership with Degura, to support your future financial security.
• Subsidized EGYM WELLPASS membership, with a contribution of only €25 per month, giving you access to a wide range of gyms and sports options across Germany.
• Quarterly company events, along with regular team activities and informal gatherings, a favorite being our Healthy Tuesday lunches or Treat Thursdays in the office!

Sounds exciting? Great! We're looking forward to receiving your online application.