Senior/Principal Fullstack Engineer (m/f/d)

A career driven by you. Join AutoScout24 Group and experience life in the fast lane. Were not just leading the market; were creating it. Were constantly innovating evolving and transforming things for our customers. Were driven ambitious and determined to do our best work together. For a career that doesnt stand still where you can put your ideas in the driving seat and change the way the world moves join our global community.

Were hiring a Senior or Principal Fullstack Engineer to join our Search Funnel team at AutoScout24 the team behind the core buyer journey. This role is about real ownership: youll work on high-traffic systems shape key parts of our user experience and contribute to critical business outcomes.

Youll be deeply involved in architecture implementation and mentorship all while driving quality performance and scalability across the stack.

What youll do

• Lead the development of fullstack features using React TypeScript Java Next.
• Architect and maintain amodular monolith thats clean scalable and built to last.
• Optimizefrontend performance with a strong focus on Core Web Vitals and usability.
• Design backend services that are efficient observable and production-ready.
• DriveA/B experimentation performance measurement and data-informed decisions.
• Contribute to strategic technical decisions clean code standards and long-term system health.
• Mentor engineers across the team and foster a high-performance engineering culture.

Our Tech Stack

• Frontend: React TypeScript Zustand
• Backend: JavaREST APIs
• Infrastructure: AWS (EC2 S3 SQS etc.) CI/CD via GitHub Actions
• Observability: Datadog
• Other: Internal experimentation platform analytics tooling feature flag systems

What you should bring

• 8 years of hands-on software development experience with production systems.
• Deep expertise inJavaScript/TypeScript React and .
• Solid backend knowledge inJava and distributed systems (Scala is a plus).
• Experience building and runninghigh-traffic applications in a product-focused environment.
• Strong understanding offrontend performance SEO and Core Web Vitals.
• Proven experience working withmodular monoliths.
• Comfortable working withexperimentation feature flags and data-driven iteration.
• Clear communicator and natural mentor capable of guiding technical decisions and team growth.
• Experience leveraging AI Generative AI (GenAI) to enhance engineering productivity automate repetitive tasks and optimize workflows. Candidates should demonstrate the ability to integrate AI-driven solutions into their daily work such as code generation debugging reviews documentation and decision supportto improve efficiency for themselves and their teams. A proactive approach to exploring and implementing AI tools that drive innovation and streamline development processes is highly valued.

Nice to Have

• Experience in marketplace platforms or high-visibility consumer-facing products.
• Familiarity with frontend architecture at scale: routing state modular UI design.
• Contributions to frontend or backend tooling testing strategies or performance profiling.

A culture of growth

With over 50 nationalities represented were proud to welcome people of all backgrounds to our growing community and were always finding new ways to help people feel welcomed and included. Here youll have the tools training and support you need to work in a way that suits you learn new skills and reach your potential.

For a career where you can drive our business and shape your future apply now.