Staff / Senior Software Engineer - Machine Learning (m/f/d)

Tätigkeiten / Anforderungen

Was du bei uns bewegst:

• Architect and build scalable recommender systems end-to-end, from feature engineering and modeling to reliable production serving
• Implement and integrate modern AI and LLM-based capabilities into scalable production systems
• Write clean, maintainable, and testable production-quality code with a strong focus on reliability and long-term maintainability
• Take full ownership of ML systems in production, including deployment, monitoring, performance optimisation, and system resilience
• Enable controlled experimentation and continuous optimisation of recommender systems in production environments
• Proactively experiment with new approaches, tools, and architectures to continuously improve recommender performance and system design
• Collaborate closely with data scientists, software engineers, data engineers, and product managers to integrate ML solutions into scalable, production-ready system architectures
• Continuously improve engineering standards, tooling, experimentation practices, and system robustness

Was du mitbringst:

• Several years of hands-on experience operating machine learning systems in production at scale
• Strong software engineering fundamentals, including system design, clean architecture, testing strategies, CI/CD, and code reviews
• Solid data science foundation in recommender systems
• Proficiency in Python and working knowledge of backend languages such as Go or Java, with experience building and operating ML systems in distributed, cloud-based environments (e.g., Spark/PySpark, AWS)
• Practical experience integrating modern AI systems such as LLMs into real-world applications
• Experience designing observable, resilient, and scalable ML systems (monitoring, logging, alerting, performance tracking)
• Strong background in experimentation and controlled rollouts in production environments
• A pragmatic, solution-oriented mindset with a strong builder mentality and ownership attitude
• Ability to operate confidently as a senior engineer within cross-functional product and engineering teams
• Excellent communication skills in English; German skills are an advantage