Senior Fullstack Engineer (m/f/d)

What you'll bring:

You'll bring strong engineering fundamentals, sound technical judgement and the ability to take ownership of features in a complex, established product environment.

Alongside building customer-facing AI capabilities, you'll use GenAI tools in your everyday development work . We value curiosity and a willingness to learn; your depth as a software engineer is the foundation, and we'll support you in developing your AI skills further.

• 5+ years of hands-on software engineering experience building and operating production systems.
• Strong professional experience with React, TypeScript and Node.js .
• Strong frontend engineering experience combined with the ability and willingness to contribute across backend services when needed.
• Experience working in large, existing codebases and delivering maintainable, well-tested software.
• Strong understanding of software engineering fundamentals, including application architecture, testing, code quality and maintainability.
• Experience taking ownership of features or technical solutions from design through production.
• Ability to make pragmatic technical decisions and clearly explain the reasoning and trade-offs behind them.
• Experience collaborating effectively with Product, Design and Engineering colleagues in cross-functional teams.
• Curiosity about GenAI and AI-assisted software development , with an interest in incorporating these tools into your everyday engineering workflow.
• A learning mindset and the ability to quickly pick up new technologies and tools. Willingness to learn Java and contribute to Java-based backend services as needed.
• Strong communication skills and the ability to collaborate, challenge ideas constructively and contribute to technical discussions.

Nice to have

• Experience developing backend services with Java.
• Hands-on experience using AI-assisted development tools such as GitHub Copilot, ChatGPT, Cursor, Claude or Codex.
• Experience building features or applications that integrate LLMs or AI APIs .
• Experience with cloud environments such as AWS .
• Previous experience building products or tools for B2B customers.

A culture of growth

With over 50 nationalities represented, we're proud to welcome people of all backgrounds to our growing community, and we're always finding new ways to help people feel welcomed and included. Here, you'll 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.

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Posted Nov 01, 2026

Posted Nov 01, 2026

Source: Statistisches Bundesamt (Destatis), table; dl-de/by-2-0; StarIn's calculation