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Héloïse LeclercqHL

Héloïse Leclercq

Senior Data Engineer

€650/day
10 projects
Lille, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Héloïse

Data management specialist since 2006, I design and implement data collection and transformation systems.

I now wish to get involved in projects with an AI and NLP component. To this end, I have obtained the certification "Develop an AI solution (NLP and Python)".

Rigorous and attentive, I am committed to understanding business challenges and data, and to using my analytical skills to solve my clients' problems.
  • French

    Native or bilingual

  • English

    Fluent

  • German

    Basic

Can work on-site
Lille (up to 15km)

Experience

  • Done
    Implementation of a data foundation for commercial piloting and data structuring
    CONSULTING AND AUDITS
    January 2026 - March 2026 (2 months)
    Lille, France
    Data Engineering mission aimed atstructuring the company's data ecosystemand setting up an initial **usable decision-making architecture**.

    Achievements

    *Data flow mappingand formalization of thedata dictionary
    • Definition ofdata mappingbetween theinternal platformandHubSpot CRM
    • Design and implementation of a MVPData WarehouseonBigQuery
    • Selection and integration of theAirbyte Cloudingestion solution for HubSpot data
    • Setup of the transformation and calculation chain withDataform
    • Implementation ofdaily ingestionof HubSpot data
    • Development ofSQL transformationsand **business calculations**, particularly for sales commission calculation
    • Creation ofindividual and collective dashboardson **Looker Studio Pro**, with access rights management
    • Technical documentation and knowledge transfer
    Result
    Implementation of astructured data environmentallowing data centralization, **reliable business calculations**, automated processing, and improved **commercial steering**.



    **Stack**: GCP, BigQuery, Dataform, Airbyte Cloud, HubSpot, Looker Studio Pro, SQL
    BigQuery Google Cloud Platform (GCP) Dataform Looker Studio SQL
  • Cyrop
    Data Engineer / Data Scientist
    CONSULTING AND AUDITS
    February 2024 - March 2024 (2 months)
    Study of data storage and analysis needs.
    Data analysis on Elasticsearch, visualizations on Kibana
    Text data analysis with Python, Pandas, Scikit-learn, for automatic categorization of cybersecurity incident tickets.
  • COMECA
    Analysis of ETL ODI flows (Oracle Data Integrator)
    ENERGY AND UTILITIES
    March 2023 - June 2024 (1 year and 2 months)
    Analysis and writing of technical specifications for an ODI migration
    Investigation of problems on ODI flows in production
    ETL ODI Analysis Technical Specifications

Reviews

5.0

Out of 8 ratings

C

Cynthia

Head of Product & IT - Done

Reviewed on 4/1/2026

Héloïse was able to adapt to our needs, which evolved during the assignment. We are very happy with the work done and the adherence to certain deadlines that arose along the way. Héloïse's presence at our premises was a plus, allowing us to better share our IT system's functioning and discuss our expectations. I recommend Héloïse!
N

Nicolas

COMECA SAS

Reviewed on 5/2/2023

Perfect!

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Education

  • Master 2 (M2), Computer Science and Linguistics
    University of Lille - Humanities and Social Sciences
    2010
    Master 2 (M2), Informatique et Linguistique
  • Master, Computer Science and Document
    University of Lille - Humanities and Social Sciences
    2006
    Master, Informatique et Document

Certifications

Skill set

Categories