(Senior) Data Scientist – AI Booster Team (f|m|d)

We are looking for a Data Scientist to join our AI Booster Team, where you will translate ideas into evidence by designing experiments, measuring LLM quality, and unlocking the full value of idealo's data assets to guide today's and tomorrow's GenAI initiatives.

Requirements

• 3+ years in data science/analytics, including A/B testing or causal inference at scale
• Expert SQL and Python (pandas, StatsModels/SciPy, scikit-learn)
• Hands-on with LLM assessment - prompt/temperature sweeps, embedding similarity metrics, human-in-the-loop studies, and LLM-as-a-judge tools
• Familiar with Generative AI stacks (Hugging Face, LangChain/LlamaIndex, vector DBs like Pinecone/Qdrant)
• Proficiency in AWS analytics & MLOps: SageMaker Experiments/Pipelines, Bedrock, Athena, Lambda, Step Functions

Benefits

• Generous Paid Time Off
• 401k Matching
• Retirement Plan
• Free counseling and support in all areas of life
• Free fitness and sports options
• Job bike or Deutschlandticket
• Free organic breakfast, excellent free lunch, free coffee, lemonades and after-work beer
• Rooftop terrace with view of the whole of Berlin