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Corentin JayCJ

Corentin Jay

Data Scientist

€300/day
Bordeaux, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Corentin

With a solid background in the financial sector and a Master's degree in Data Science, I leverage my passion for complex data analysis to achieve concrete results. Specializing in statistical analysis and machine learning, I transform your data into true performance drivers.

Capable of interpreting your data and extracting high-value insights, feel free to consult my profile (LinkedIn, GitHub) as well as my various projects:

- Financial strategies for sports betting (NHL, NBA & MLB)
- Advanced NBA statistics and fantasy score predictions
- Climate projections in France for 2035, 2040, 2045, and 2050

Contact me for more information.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Bordeaux (up to 50km)

Experience

  • je suis indépendant
    US Sports betting management
    October 2024 - Today (1 year and 10 months)
    Bordeaux, France
    Exploiting official APIs (NBA, NHL, and MLB), feature engineering, modeling, and predicting individual sports performances.

    Profitable strategies:
    🏒 NHL 2025/26 → +13.55%
    ⚾ MLB 2025 → +7.43%
    🏀 NBA 2025/26 → +4.77%

    Python, SQL, Pandas, API requests, Scikit-learn, Cross-validation, optimization (Optuna / Gridsearch CV), back testing.
    Python Scikit-learn Pandas LightGBM
  • Quadratic Labs
    DATA SCIENTIST CONSULTANT
    ENERGY AND UTILITIES
    February 2024 - September 2024 (7 months)
    Paris, France
    Consulting for major players in the energy sector.
    ALPIQ: Analysis, quantification, and prediction of customer churn risk | R, Logistic Regression.
    ENI: Support for Finance and Management Control teams in consumption predictions and billing | R, Shiny, CI/CD, JIRA, Bitbucket.
    ENGIE: Support for Trading teams in energy consumption forecasts | Python, Databricks, AWS
    R Bitbucket Jira/Confluence Logistic Regression Statistical analysis
  • Partech Partners
    SENIOR FINANCIAL CONTROLLER – PRIVATE EQUITY
    April 2022 - September 2022 (5 months)
    Paris, France
    Monitoring, valuation, and validation of investments in startups (Seed stage). Regulatory reporting | KPIs | Capital calls and distributions | Data analysis

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Education

  • Master Data Scientist
    OpenClassrooms x Centrale Supélec
    2023
    Master en Data Science (RNCP niv. 7). Data visualisation, feature engineering, modélisation supervisée et non supervisée, Cloud computing, scoring, dashboarding. Python | SQL | Pandas | Matplotlib | PySpark | AWS | Streamlit
  • Master in Banking, Finance, and International Trade
    Université Montesquieu Bordeaux IV
    2014

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Skill set

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