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Idir BensalamaIB

Idir Bensalama

Data Scientist | Python & SAS | ML & Econometrics

€350/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Idir

Data Scientist expert in rigorous statistical modeling. I support clients from exploration to production: scoping, data prep, modeling, deployment, monitoring.
- Prediction & scoring (churn, conversion, fraud, LTV)
- Forecasting (sales, demand, capacity)
- Recommendation & ranking (basic to advanced)
- Advanced analytics (A/B testing, causality, segmentation)
Python, SAS, R, VBA, SQL, sklearn, XGBoost/LightGBM, stats, time series,
Remote work: 2x/3x per week sync, clear reporting, reproducible deliverables, rigorous documentation.
  • French

    Native or bilingual

  • English

    Native or bilingual

  • Spanish

    Conversational

Remote only
Primarily works remotely

Experience

  • Banque Centrale Européenne
    Data Scientist - Auditor
    BANKING AND INSURANCE
    April 2025 - August 2025 (4 months)
    Madrid, Spain
    On-site audit mission within the largest Spanish bank in Madrid.
    Conducted end-to-end quantitative analyses on predictive models: scoping, data extraction/quality checks, methodological review, calibration, performance and stability testing, backtesting/benchmarking, bias & sensitivity analysis, control automation (Python/SQL), then operational reporting and recommendations via documented deliverables.Investigation of a PD model on a large corporate and bank portfolio (very Low Default Portfolio context).
    Working language (spoken and written): English.
    Credit risk Report writing Banking regulation Data science Machine learning
  • Banque de France
    Data Scientist - Internal Model Audit
    PUBLIC SECTOR
    January 2023 - November 2025 (2 years and 10 months)
    Paris, France
    Banking supervisor at the General Inspection of the Banque de France.
    Participation in +7 on-site inspection missions commissioned by the European Central Bank (IMI credit risk) within major Parisian banks.
    Conducted end-to-end quantitative analyses on predictive models: scoping, data extraction/quality checks, methodological review, calibration, performance and stability testing, backtesting/benchmarking, bias & sensitivity analysis, control automation (Python/SQL), then operational reporting and recommendations via documented deliverables.
    Skills:
    • Audit of internal models (Retail, SME, Corporate, Public Entities) for credit risk IRB (
    Credit risk Banking regulation Report writing Data science Machine learning
  • Paris 1 Panthéon-Sorbonne
    LECTURER in Master 2 – Python & Data Science
    BANKING AND INSURANCE
    September 2024 - September 2025 (1 year)
    Paris, France
    Design and delivery of a practical introductory course on Python programming and data science techniques, adapted to banking risk and compliance challenges. Emphasis on concrete use cases: credit risk modeling, fraud detection, and regulatory stress tests (Basel III, CRR, AML-CFT). "Active learning" approach through real case studies, coding workshops, and financial datasets to bridge the gap between regulatory expectations and modern data methods.
    Python Credit risk Risk analysis

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Education

  • MASTER 2 Applied Economics - MASERATI - Data Science - High Distinction
    Université Paris-Est Créteil
    2022
    Forme aux métiers de Data Analyst, Data Scientist, chargé d'études statistiques, économiste ...

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