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Yvan Lesly S.YL

Yvan Lesly S.

Data & BI Analyst

€700/day
Paris, FR
3-7 years
Tableau software
SQL
Microsoft Power BI
Data Analysis
Data visualisation

Average response time: 1 hour

Freelancer profile translated to English.
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About Yvan Lesly

Experienced in Analytics with a strong expertise in data collection, cleaning, analysis, and statistical modeling to provide strategic insights. I have advanced skills in problem-solving, big data manipulation, and predictive model development. Proven experience in using Dataiku, Python, SQL, Tableau, and Power BI to create data processing workflows, extract meaningful insights, and build reports and dashboards to track KPIs, which contribute to business and strategic decisions and guide operations. I effectively communicate complex results to non-technical stakeholders and collaborate with multidisciplinary teams to solve problems. I am focused on innovation, continuous improvement, and finding pragmatic solutions to challenges.
Consulting and Audits
Education Companies
Banking and Financial Services

  • English

    Native or bilingual

  • French

    Native or bilingual

Can work on-site
Paris (up to 50km), Lyon (up to 50km), Montpellier (up to 50km), Nice (up to 50km), Lille (up to 50km)

Experience

  • CARDIF/Karapass
    Data & BI Consultant and Architect
    BANKING AND INSURANCE
    January 2026 - Today (5 months)
    Boulogne-Billancourt, France
    Data Driven Project - Consulting and Support in implementing a data-driven BI architecture adapted to needs (Data Mart and Visualization)

    • Design and development of datamarts in SQL (modeling, feeding, data structuring) for claims analysis on premiums.
    • Consulting on best practices for datamart design and target BI architecture for future uses.
    • Reverse engineering of business rules related to datamart feeding in collaboration with business teams.
    • Formalization, validation, and documentation of business rules with stakeholders.
    • Design and development of the Claims on Premium dashboard with Tableau and deployment on Tableau Server.
    • Definition and implementation of steering measures and indicators in line with business needs.
    • UX/UI design of dashboards via Figma, in line with user expectations.
    • Proactive proposals for analytical reporting to improve decision-making.
    • Conducting client demonstrations of Tableau features to promote the capabilities of the BI tool (Tableau).
    • Organization and facilitation of follow-up and continuous alignment workshops with business (data) teams between needs and deliverables.
    • Delivery monitoring: adherence to deadlines, quality of deliverables, and stakeholder satisfaction.
    Tableau software SQL Tableau Server PostgreSQL Microsoft Excel
  • Croix Rouge Française
    Tableau Expert | Data & Business Intelligence Consultant
    CIVIC AND SOCIAL ORGANIZATIONS
    May 2025 - December 2025 (7 months)
    Montrouge, France
    Support for social impact study teams in the data domain

    • Mapping of French Red Cross sites and their territorial coverage.
    • Technical support for business teams.
    • Geographic and spatial data analysis.
    • Training and support for junior staff in data mapping.
    • Proposal for BI architecture from data collection to processing.
    • Audit and resolution of performance issues in existing dashboards.
    • Formalization of data collection procedures.
    • Standardization of data format for BI tool consumption.
    Power Query Microsoft Power BI SQL Spatial Design Spatial Analysis
  • BNP Paribas BCEF
    Tableau Expert - Data & Business Intelligence Consultant
    BANKING AND INSURANCE
    May 2024 - May 2025 (1 year)
    Paris, France
    Overhaul of the BI service within FINANCE DRP and support for business teams and management control on all data BI projects

    • Management of the Tableau Server platform and the Dataiku Datalab.
    • Design, development, and deployment of reports and dashboards.
    • Definition of development best practices.
    • Technical support for business teams.
    • Administration of the Tableau site for the BCEF FINANCE department and the Entrepreneur business line.
    • Implementation of data processing workflows (Dataiku).
    • Management of authorization requests.
    • Management of the BI request backlog.
    • Supervision of collaborators (3) on Tableau developments.
    SQL Data Analysis Data visualisation ETL
Check out Yvan Lesly's experience

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Education

  • Master of Science in Management
    IA SCHOOL
    2020
    Master in Artificial Intelligence and Management
  • Diploma in Oil and Gas Engineering
    ET D'ÉXPLOITATION MINIÈRE
    2019
    Diplôme en génie pétrolier et gazier

Certifications

  • Professional Scrum Product Owner™ I (PSPM I)
    SCRUM
    2025
  • Certified Tableau Consultant
    Sales Force
    2025
Yvan Lesly's certifications are only visible to Malt Community members

Skill set

Tableau Prep
Python
M3
Data Analysis
Sales Forecasting
Automation
Database Management
Customer Tracking
Power Query
DAX
M
Machine Learning
Python (Programming Language)
Dashboards
Energy Efficiency
Statistical Data Analysis
Data Modeling
Atlassian JIRA
Atlassian Confluence

Categories