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Nassim B.NB

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About Nassim

Passionate Data Engineer dedicated to building robust, scalable, and intelligent systems. I assist organizations in industrializing their data processing pipelines, from ingestion to production.

After several years in Data Science, I transitioned to Data Engineering to tackle technical challenges related to data volume, reliability, and governance.

I am proficient with tools like Airflow, Spark, Databricks, AWS, Terraform, Docker, CI/CD, and I am comfortable building end-to-end data pipelines in demanding cloud environments.

🌍 My goal: Make data available, reliable, and actionable for Product, BI, and Data Science teams.

🔎 Constantly learning, I acquire new skills weekly, build personal projects, and enjoy collaborating with multidisciplinary teams.

✅ Open to opportunities in data engineering, cloud data, or impact-oriented projects.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 50km), Paris (up to 30km)

Experience

  • PayFit France,
    Data Scientist / Data Engineer
    HUMAN RESOURCES
    January 2020 - October 2024 (4 years and 9 months)
    Paris, France
    🔹 Customer Ticket Pipeline & Churn Prediction
    Created automated pipelines with Airflow, DBT, and BigQuery to process and structure tens of thousands of customer tickets.
    Detected weak churn signals and triggered proactive actions through SQL analysis and simple Python models.

    🔹 Feedback Analysis & Product Irritant Reduction
    Ingested and modeled customer feedback (tickets, NPS) to identify friction points using DBT, SQL, and BigQuery.
    Delivered actionable recommendations via Looker dashboards and automated reports with Airflow.

    🔹 Real-time Monitoring Dashboards (Support & Product)
    Built interactive dashboards (KPIs, SLAs) with Looker, Data Studio, and Power BI, updated in near real-time.
    Orchestrated data collection and transformations using Python, SQL, and tools like Airflow / in-house ETL.








    DBT Python SQL Snowflake
  • Cliris,
    Data Science Intern
    TECH
    March 2019 - September 2019 (6 months)
    Paris, France
    As part of this project, I designed a computer vision system to automatically detect cars in complex scenes (crowded parking lots, urban traffic, difficult weather conditions, etc.). The objective was to create a robust solution capable of recognizing and locating vehicles in heterogeneous images, considering partial occlusion, variable scale, and disturbed visual environments.

    Python, PyTorch, OpenCV

    YOLOv5, Faster R-CNN, SSD

    LabelImg for annotation, TensorBoard for training monitoring


    ✅ Result:

    Accurate vehicle detection with an mAP of 95% on complex scenes.

    Reusable pipeline for other object detection use cases (pedestrians, traffic lights, signs, etc.).

    Demonstrable implementation in a notebook or demo API.

    Python TensorFlow Deep Learning Scikit-learn

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Education

  • Master's Degree in Data Science
    INSA Rouen
    2019
    Data science
  • Data Engineer (RNCP38919)
    Datascientest
    2025
    Formé par DataScientest avec la certification officielle de niveau 7, délivrée par Mines ParisTech - PSL Executive Education, blocs 2 et 3 validés. Enregistrée au RNCP le 26 avril 2024 par France Compétences.

Certifications

  • AWS Certified Solutions Architect Associate
    Datascientest
    AWS Lambda Cloud AWS AWS S3 AWS

Skill set

Categories