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Léa H.LH

Léa H.

Data Engineer Senior – Cloud & Snowflake

€500/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Léa

After years in IT consulting, I help companies analyze and leverage their data to optimize decision-making through BI processes.

My expertise covers:

✅ Data Analysis & Reporting: Extracting, transforming, and visualizing data to provide actionable insights.
✅ Business Intelligence: Creating interactive dashboards and automating reporting with tools like Power BI or Advanced Excel.
✅ Data Management & Cleaning: Structuring and improving data quality for more reliable analysis.
✅ IT Support & Project Management: Assisting with technical needs and overseeing IT projects.

I am available for ad-hoc or ongoing missions. Contact me to discuss your project!
  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • WEBTINIX
    Data Engineer
    EDUCATION AND E-LEARNING
    May 2024 - Today (2 years and 3 months)
    Paris, France
    Project: Data Platform for an LMS (students, teachers, courses, grades)
    Snowflake database design and data modeling.
    ELT Architecture: AWS S3 ingestion → Snowflake (raw, staging).
    Provisioning via Terraform (environments, roles, permissions).
    Development of ingestion pipelines and advanced SQL transformations.
    Automation & controls via Python (error handling, monitoring).
    Implementation of data quality rules (completeness, consistency, deduplication).
    Snowflake AWS S3 Python Terraform SQL
  • Keolis
    Data Analyst Deployment
    TRANSPORTATION
    January 2024 - May 2024 (4 months)
    Paris, France
    Project: IMPULSE Platform (transport indicators: schedules, ridership..)
    - Mapping of subsidiary data and IMPULSE data
    - Normalization of identifiers to ensure consistency
    - Development of data extraction, conversion, and transformation programs
    - Ingestion tests and data flow validation.
    - Scheduling of daily extraction tasks (GTFS, SAE, ticketing, master data).
    Microsoft Azure Python SQL Databricks Digital Transformation
  • Accor
    Data Engineer
    HOSPITALITY
    December 2021 - November 2023 (1 year and 11 months)
    Project: Datahub Loyalty & Partnership
    - Design and deployment of a data hub for customer loyalty management - Relational schema design (draw.io).
    - Development of Snowflake interfaces (DWH & Datamarts).
    - Extraction & configuration via Talend (GDPR anonymization).
    - Analysis of business rules, unit testing, and functional acceptance.
    - Debugging, optimization, and continuous delivery.
    - Contribution to marketing campaigns.
    Snowflake Gitlab CI/CD SQL Git Data Analysis

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Education

  • Master in Information Systems Engineering and Management
    UT1 Capitole
    2016
    Master Ingénierie et Gestion des Systèmes d'Information

Skill set

Categories