Build and maintain core customer journeys such as login, account management, billing & payments, and self-service features
Develop with Next.js / React and TypeScript using a component-driven approach
Design web experiences that work seamlessly on both desktop and mobile devices
Collaborate on mobile app experiences in React Native and ensure a consistent UX across all channels
Integrate frontend applications with API-driven backends (GraphQL / REST)
Apply schema-based typing and validation (e.g., Zod) for reliable data handling and consistent interfaces between frontend and backend
Work closely with UX/UI design, backend, QA, and platform teams in Agile/Scrum setups
Ensure performance, accessibility, and quality across browsers and devices
Contribute to frontend standards, testing strategies, and CI/CD quality processes
Use AI agents for autonomous code generation and focus on strategic reviewing, architecture, and efficient human-in-the-loop processes

Several years of experience building production-ready frontend applications with React / Next.js and TypeScript
Strong frontend fundamentals: component architecture, performance optimization, accessibility, and modern CSS
AI-native developer mindset: proficient with agent-driven workflows using tools like Claude Code, Cursor (Composer), or Windsurf (Cascade)
Experience with API-first platforms and authentication flows
Pragmatic approach to testing and secure working practices in CI/CD-driven teams
Strong communication skills in German and English and a pronounced ownership mindset
Nice to have: experience with GraphQL, experience developing configurable or white-label products, familiarity with Mobile-First strategies (PWA) and/or cross-platform approaches (Flutter, React Native), or willingness to learn

Senior Frontend Engineer, React, Next.js

Key skills