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Johan GrenéJG

Johan Grené

SENIOR DATA ANALYST

€750/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Johan

Senior Data Analyst with a strong business orientation, specializing in advanced analysis, data modeling, and supporting growth, product, and marketing teams. Experience in high-volume data scale-ups (SumUp, Luko), with expertise across the entire data chain: from structuring models to producing strategic analyses.

Key Skills

Business performance analysis (KPI, LTV, churn, cohorts, conversion)
Advanced SQL modeling and data transformation with dbt
BI Tools: Omni, Looker, Tableau
CRM data integration and exploitation (HubSpot, Salesforce, Iterable)
Building tailor-made recommendations based on personas, usage, and customer history (e.g., personalized package recommendations)

Added Value:
Ability to structure and ensure reliable data exploitation in a demanding environment, produce directly actionable analyses, transform business needs into sustainable data solutions, and collaborate effectively with multidisciplinary teams.
  • Spanish

    Native or bilingual

  • French

    Native or bilingual

  • English

    Native or bilingual

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

Experience

  • Polène
    First data analyst
    LUXURY GOODS
    September 2025 - Today (9 months)
    Paris, France
    Construction and end-to-end management of the analytics stack to support Polène's operational and business teams.

    Implementation of dbt conventions and the semantic layer in Omni, to provide reliable and consistent indicators to all teams.

    - Deployment of key reporting on:
    Top-line performance and pipeline management: identification of a plateau in key countries
    CRM and customer support
    Logistics operations and associated costs

    - Construction of a 2026 Budget modeling tool

    - Conducting in-depth analyses on logistical issues (cause identification, financial impact estimation) and CRM analyses, including A/B tests, to support process optimization and decision-making.

    This mission helped structure a robust and shared data foundation, facilitating data-driven decision-making across the company. Robust stack with nearly 4 months of existence.
    DBT SQL Data analysis
  • SumUp
    SENIOR DATA ANALYST
    January 2023 - Today (3 years and 5 months)
    Paris, France
    Unified lead acquisition funnels by standardizing data from diverse sources and stakeholders, ensuring consistency across the pipeline. Led the implementation of a 'single source of truth' culture in the team to enhance data reliability and decision-making: over 40k views on my dashboards, with over 500 distinct users Designed and built a scalable, automated commission model implemented
  • Luko
    Data analyst
    BANKING AND INSURANCE
    January 2020 - January 2023 (3 years)
    Paris, France
    Collaborated with a team of >15 people in the whole User Acquisition team, and managed two interns. Built the whole data structure in DBT of the attribution system. Created an "incrementality" model in python, and Data driven attribution model (data cleaning, analysis, statistical modeling) in order to understand the marginal effect of our different marketing channels. Ran analysis on funnel segmentation and recommended a tailored model that would propose the best fitted options on quote page for each prospect. Implementation showed an increment of +3% of monthly recurring revenue. Built AB test infrastructure for CRM team to run their tests: Roughly 2 AB tests/month are run on average.

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Education

  • MSc Data analytics & Artificial Intelligence
    EDHEC Business School
    2020
    MSc Data analytics & Artificial Intelligence
  • Classe préparatoire
    2016

Skill set

Categories