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Data Scientist (all genders)

External
Deutsche Lufthansa AG logoDeutsche Lufthansa Ag · Köln, Nordrhein-westfalen
Full-timeUnknown1w ago
AzureCore DataFeature EngineeringForecastingLLMsMachine Learning
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Responsibilities

  • Design, develop, and deploy machine learning and AI solutions that solve commercial problems across pricing, demand, and revenue optimization
  • Own model quality end-to-end - monitor performance, improve accuracy, ensure explainability, and quantify business impact throughout the model lifecycle
  • Collaborate with Business Analysts, Data Engineers, Revenue Management, and Subject Matter Experts to deliver production-grade data products
  • Identify opportunities where emerging techniques (GenAI, advanced forecasting, optimization) can create measurable business value - and build them
  • Our Tech Stack: PySpark, Python , Databricks, Azure Cloud, MLflow
  • Ihr Profil:

Requirements

  • University degree (preferably Master's) in Economics, Computer Science, or a STEM-related field
  • 4-5 years of professional experience as a Data Scientist or ML Engineer
  • Solid understanding of Python, SQL and core data science libraries
  • Familiarity with BI tools
  • Proficiency with Databricks or similar lakehouse/notebook platforms
  • Ability to select and justify modeling approaches based on data characteristics, business constraints and interpretability requirements
  • Understanding of model performance trade-offs and hyperparameter tuning
  • Experience with feature engineering, data cleaning and managing data leakage and overfitting
  • Experience with constrained optimization models
  • Experience building RAG pipelines or integrating LLMs into production workflows
  • At least 2-3 years of experience with MLOps practices and experiment tracking
  • Experience working with at least one cloud platform
  • Curiosity to dig into unfamiliar business domains and ask "why"
  • A bias toward pragmatic solutions
  • Comfort navigating ambiguity
  • Ownership of data quality

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