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Delonglee WilliamDW

Delonglee William

Data Analyst

€126/day
Paris, FR
0-2 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Delonglee

Trained in economics at Paris 1 Panthéon-Sorbonne University and then in marketing and strategy at Paris Dauphine – PSL University, I work on projects combining data analysis, visualization, and decision support.

I offer my services in:

Data analysis: structuring, processing, and interpreting data from multiple sources; statistical analysis, segmentation, insight generation.

Data visualization & reporting: creation of business KPIs and automated dashboards, particularly in Power BI.

Market research: conducting competitive benchmarks, designing questionnaires, collecting and analyzing qualitative and quantitative data, strategic recommendations.
  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • Wavestone
    Transport & Mobility Consultant
    CONSULTING AND AUDITS
    June 2024 - August 2025 (1 year and 2 months)
    Paris, France
    Public Transport Sector

    Data Analyst (Maintenance & Operational Performance)
    • Collection and harmonization of data from multiple sources (CMMS, fleet management software, manual reporting) from 10 field teams
    • Creation of maintenance workshop performance KPIs (Bus, Tram, Rail Rolling Stock) and reporting automation via Power BI
    • Data validation work, regular follow-up with operational managers, contribution to the implementation of a continuous improvement plan
    Data Analyst & Project Management
    • Regional information and ticketing system redesign program (SIBR)
    • Support for project management: redefining functional scopes, monitoring milestones, and structuring the roadmap.
    • Implementation of a Jira project to coordinate technical and functional workstreams.
    • Co-construction with operational management of a delivery monitoring system: definition of key indicators, development of Power BI dashboards.
    • Active interface between business, IT, and MOA teams to ensure deliverable consistency.
    PMO & Data Analyst
    • Cross-functional management of over 150 digital products developed within RATP's Digital Factory.
    • Implementation of global project reporting, via dynamic EazyBI dashboards (Jira), for business and product management.
    • Development and monitoring of project KPIs, leading portfolio reviews, and tracking OKRs related to digital transformation.
    • Change management support: Atlassian training (Jira/Confluence), workshop facilitation, creation of educational materials.
    • Skill development in Agile methodologies and product governance tools
    Microsoft Excel Data analysis Data visualization Atlassian
  • MEDIAWAN
    Programming Assistant
    FILM AND AV
    September 2022 - September 2023 (1 year)
    Paris, France
    Data & Programming Analyst
    • Audience studies to guide programming decisions: trend detection, identification of high-potential slots
    • Contribution to the programming strategy of the group's thematic channels (AB1, Action, Mangas, RTL9)
    • Participation in deprogramming meetings: recommendations based on performance and audience behavior analysis
    • Development of micro-programming (selection, sequencing, scheduling), in line with channel positioning objectives
    • Operational coordination in the studio for recording and broadcasting audiovisual content
    • Writing critical and synthetic notes on viewed works (films, series, documentaries)
    Data analysis Microsoft Excel Audiovisual production
  • ENTREPRISE DE L'INDUSTRIE DE LA CHAUSSURE
    Market-Fit Mission
    RETAIL (SMALL BUSINESS)
    January 2024 - April 2024 (3 months)
    Paris, France
    Strategic support for a young luxury shoe brand
    Consulting mission to refine the marketing positioning and commercial strategy of a French Richelieu shoe brand.
    • Competitive benchmark (prices, styles, target audiences, distribution).
    • Design, distribution, and processing of a quantitative consumer survey to identify the target customer and their expectations (purchasing habits, choice criteria, price/brand sensitivity).
    • Analysis of results using statistical tools (Excel, SPSS) and formulation of concrete recommendations: customer segmentation, differentiating elements to highlight, offer adjustment.
    Market research Data analysis Microsoft Excel

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Education

  • Independent private tutor in Economics and Statistics
    2019
    Professeur particulier indépendant en Économie et Statistiques
  • Master 2 in Marketing and Strategy, Consulting track
    PARIS DAUPHINE-PSL UNIVERSITY
    2024
    Master 2 marketing et stratégie parcours conseil et

Skill set

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