Senior Data Scientist (Python)

New
P
ProxifyData Science
EMEA, CET +/- 3 hours, CET (+/- 3 hours)ContractSenior
Salary not disclosed
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Job Details

Experience
5+ years
Required Skills
AWSDockerPythonSQLGCPMLFlowNumpyPandasscikit-learnPySpark

Requirements

  • 5+ years of professional experience as a Data Scientist.
  • Expert-level mastery of the Python data ecosystem (Pandas, NumPy, SciPy, Scikit-Learn).
  • Deep theoretical and practical knowledge of supervised and unsupervised learning, regression, classification, clustering, and time-series forecasting.
  • Proven track record of moving models out of Jupyter Notebooks and into production environments using containerization (Docker) and microservice design.
  • Strong proficiency in writing complex, optimized SQL queries.
  • Experience handling large-scale data using distributed computing frameworks like PySpark or Ray.
  • Experience with machine learning lifecycle tools (such as MLflow, DVC, or Weights & Biases).
  • Hands-on experience leveraging cloud data infrastructure (AWS, GCP, or Azure) and managed ML services (e.g., SageMaker or Vertex AI).
  • Must be located in CET (+/- 3 hours) time zone.

Responsibilities

  • Design, build, and optimize scalable predictive models and machine learning algorithms to solve complex business challenges.
  • Architect and maintain robust data pipelines and feature sets, ensuring data quality, consistency, and integrity across training and inference layers.
  • Partner with Data Engineers, Product Managers, and Backend Teams to integrate ML models seamlessly into core application APIs.
  • Conduct rigorous peer code reviews for data science workflows, championing production-grade Python design patterns and linting standards.
  • Translate highly technical metrics (Precision, Recall, ROC-AUC, RMSE) into clear business outcomes and executive-level recommendations.
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