Senior Software Engineer (m/f/d)

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

We're hiring a Senior Software Engineer to join our Search Funnel team at AutoScout24 – the team behind the core buyer journey. This role is about real ownership: you’ll work on high-traffic systems, shape key parts of our user experience, and contribute to critical business outcomes. This role is a full stack engineer who is excited about GenAI’s boosting their own engineering performance and productivity and now wants an opportunity to influence a large, ambitious organization 

The engineering world is moving very fast. We are all learning every day. Your core traits should be curiosity and a strong drive to learn and grow. We do not expect you to know everything. We expect you to help accelerate our curiosity and learning culture, and to become AI-first together with us. 

What you’ll do:

• Be part of a team of strong fullstack engineers, guiding feature development using React, TypeScript, Node.js, Java, Next.  
• Drive strategic technical decisions, ensure optimal code design standards, and promote long-term system health with the team. 
• Architect and maintain a modular monolith that’s clean, scalable, and built to last. 
• Apply an AI-first mindset to every phase of you-build-it-you-run-it: from design and coding to testing, deployment and operations. 
• Work hands-on in real product codebases (for example TypeScript/Node/Next.js or Java/Spring), using GenAI tools to accelerate development, improve quality and simplify existing systems. 
• Optimise frontend performance with a strong focus on Core Web Vitals and user experience. 
• Design backend services, in the cloud, that are efficient, observable, and production-ready.  
• Drive A/B experimentation, performance measurement, and data-informed decisions. 
• Mentor engineers across the team and foster a high-performance engineering culture.  

Our Tech Stack  

• Frontend: React, TypeScript, Zustand… 

• Backend: Node.js, Java, REST APIs 

• Infrastructure: AWS (EC2, S3, SQS, etc.), CI/CD via GitHub Actions 

• Observability: Datadog 

• Other: Internal experimentation platform, analytics tooling, feature flag systems  

Must haves  

• Engineering experience of 10+ years 

• Experience of leading team(s) of 5+ people in the last several years 

• Deep expertise in JavaScript/TypeScript, React, and Node.js. 

• Experience driving and applying good code design principles  

• Experience building and running high-traffic applications in a product-focused environment. 

• Demonstrated personal excellence in using GenAI coding tools (preferably Codex) to sig