Next Lotto GmbH
AI

Senior Data Scientist m f d Remote based in Romania

Next Lotto GmbH · București, IF, RO · $500k

Actively hiring Posted 6 days ago

Role overview

  • Higher ROI and fewer wrong moves through evidence-based allocation and optimization.
  • Faster learning cycles via experimentation-backed model iteration.
  • Reduced manual decision work through reliable decisioning systems and guardrails.
  • A scalable foundation for personalization and automation beyond marketing.

What you'll work on

  • Build prediction models (e.g., conversion/CPA forecasts, propensity/LTV, churn risk, creative or placement performance signals) with strong validation and calibration.
  • Build decision policies: rules + constrained optimization (and bandits where appropriate) for allocation, placements, pacing, creative rotation, and personalization.
  • Design and analyze experiments/incrementality tests to validate models and policies (not just offline metrics).
  • Productionize with “MLE-quality”: reproducible pipelines, versioning, monitoring, alerting, and safe rollback; partner closely with Engineering/Data.
  • Translate outputs into decision-ready guidance and clear trade-offs (expected impact, uncertainty, constraints).
  • Maintain concise documentation of models/policies, data dependencies, and decision logic.

What we're looking for

  • Masters Degree in Computer Science, Data Science, Statistics, Mathematics, Econometrics, or Business Informatics (or equivalent proven skill).
  • 5–10+ years experience in Data Science / Applied ML, with at least one example of models/policies used in production.
  • Proven experience working with engineers on production constraints (monitoring, reliability, safe deployment).

Tags & focus areas

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Data Science Ai