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Johan GerfauxJG

Johan Gerfaux

ML Engineer

600 €/jour
Paris, FR
3-7 ans

Délai de réponse moyen : 1h

À propos de Johan

  • Français

    Bilingue ou natif

  • Anglais

    Bilingue ou natif

  • Suédois

    Notions

Accepte de travailler sur site
Paris (jusqu’à 50 km)

Expériences

  • Modulai (Consulting at Nordea)
    ML Engineer
    février 2025 - Aujourd'hui (1 an et 5 mois)
    Stockholm, Sweden
    • • Designed and deployed a production-grade internal agentic LLM with LangGraph and FastAPI, now actively used by 1,000+ employees.
    • • Built use cases enabling users to retrieve data from internal databases and run analysis through a secure conversational interface.
    • • Collaborated with cross-functional teams to deliver a robust AI service, driving productivity gains and adoption across 4 business units.
  • Northvolt
    Data Scientist/ML Engineer
    mai 2024 - janvier 2025 (8 mois)
    Stockholm, Sweden
    • • Collaborated in a cross-functional Task Force to address a high-priority production issue by analysing hundreds of thousands of data points. Applied clustering (DBSCAN) to separate OK vs Defective products, driving root cause discovery.
    • • Developed CatBoost models on thousands of factory features to detect product defects with a 95% recall, ensuring defective parts are not missed.
    • • Partnering with production engineers to integrate predictive insights into daily operations.
  • Northvolt
    Data Analyst/Scientist - Quality Engineer
    août 2021 - avril 2024 (2 ans et 8 mois)
    Västerås, Sweden
    • • Co-developed a production-focused LLM for root cause analysis, adopted by 200+ engineers across the company. Built scalable data ingestion with Databricks + PySpark pipelines.
    • • Led a Lean Six Sigma Yellow Belt project, delivering a Streamlit app that reduced time to statistical insights by 90% for 30 users, driving adoption of data-driven problem solving.
    • • Designed and deployed data infrastructure on AWS (Redshift, Athena, S3) + DBT, enabling real-time and aggregated dashboards (yields, scrap costs, defect trends) for management decision-making.
    • • Supervised and mentored a summer intern on driving data-driven practices in Quality Engineering.

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Formations

  • Master of Engineering
    University of California
    2020
    Master of Engineering
  • Master in Mechanical & Manufacturing Engineering…
    Arts et Métiers ParisTech
    2019
    Master in Mechanical & Manufacturing Engineering…

Catégories