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Senior Data Scientist
Clera · Berlin, Germany
About The Role
ABOUT THE ROLE
You'll join a small, senior Data Science team tackling one of the hardest forecasting problems in retail: fresh produce ordering. Every decision is a daily tradeoff between waste and availability, with immediate, visible impact in live stores — this is production ML with real operational consequences.
WHAT YOU'LL DO
- Develop and improve distributional forecasting models, working across architecture, calibration, and coverage.
- Monitor forecast quality metrics consistently and act swiftly when performance degrades.
- Contribute meaningfully to inventory simulation and ordering policy frameworks, driving improvements through to production.
- Shape technical direction in your focus area, contributing to methodology decisions and upholding high standards for code quality and production readiness.
- Own end-to-end pipeline quality, from input data integrity through forecast output to live order recommendation performance.
- Conduct ongoing monitoring and regular backtesting evaluations to assess model impact before issues reach stores.
- Ship production-quality, well-tested, readable code with thorough review.
- Leverage agentic AI tooling to work efficiently without compromising on craft.
- Collaborate with Customer Success and Engineering to translate store-level findings into product improvements.
WHAT WE'RE LOOKING FOR
- 5+ years building systems that make decisions under uncertainty with real operational consequences — not research prototypes.
- MSc or PhD in a quantitative field (Statistics, Mathematics, Physics, Operations Research, Computer Science, or similar).
- Background in probabilistic forecasting, stochastic inventory simulation, or operations research, with solid working knowledge across all three.
- Deep familiarity with distributional and probabilistic forecasting methods: quantile regression, LGBM with distributional output, GAMLSS-type models, conformal prediction.
- Solid grounding in stochastic inventory theory, newsvendor models, and service level optimisation.
- Production-grade Python and SQL on large, messy, real-world datasets.
- Experience with ML model evaluation, monitoring, and backtesting in production environments.
- Comfortable with GCP (BigQuery, Cloud Run, Vertex AI), dbt, and workflow orchestration (Cloud Composer, Airflow).
- Strong software engineering practices: Git, containerisation, CI/CD.
- Daily fluency with agentic AI coding tools (e.g. Claude Code, Cursor, or similar).
- Fluent in English; German or French is a strong plus.
- Domain knowledge in supply chain optimisation, demand planning, or perishables/grocery retail is a valuable plus.
- Prior startup or scale-up experience is a plus.
COMPENSATION & BENEFITS
- Salary: €70,000 – €110,000 annually
- Visa sponsorship: available
LOCATION
Hybrid — Berlin, Germany. Relocation support to Berlin is available.
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