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Omar GhannamOG

Omar Ghannam

Analytics Engineer / Data Analyst Senior

€778/day
Paris, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Omar

Analytics Engineer / Data Analyst Senior specialized in data structuring, KPI validation, and decision-making reporting.

I assist IT and business departments (Finance, Management Control, Marketing) in designing Analytics solutions to improve performance management and decision-making, primarily in Retail, Pharma, and Tourism environments.

I work across the entire data value chain: business scoping, modeling, data transformation (dbt / BigQuery / SQL), and reporting via Power BI.

I primarily operate in large group and Data Factory contexts, where challenges involve data quality, business steering, and adoption of decision-making tools.
  • English

    Fluent

  • French

    Native or bilingual

  • Arabic

    Native or bilingual

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

Experience

  • Servier
    Analytics Engineer / Data Analyst Senior - Power BI, dbt, BigQuery & KPI
    PHARMACEUTICALS INDUSTRY
    January 2024 - October 2025 (1 year and 9 months)
    Suresnes, France
    Within the Data Factory, integrated into the Corporate Finance Feature Team dedicated to Group Finance's analytical steering.

    Performance Management (Group Finance)
    • Definition and structuring of financial KPIs (P&L, corporate indicators)
    • Design and evolution of Power BI dashboards dedicated to performance steering
    • Provision of datasets for BI and self-service analytics uses
    • Support for Finance teams in exploiting indicators and decision-making tools

    Data Transformation & Modeling (GCP)
    • Development of data transformations using dbt / SQL on BigQuery
    • Modeling of Finance data marts for reporting and decision-making analysis
    • Contribution to a shared Finance data foundation
    • Optimization of processing performance and analytical models

    Data Quality & Reliability
    • Data quality control and deliverable validation
    • Pipeline monitoring and anomaly correction
    • Documentation of data models and transformations

    Environment: Power BI, BigQuery, dbt, SQL, DAX, Jira, Confluence, Agile Scrum
    Microsoft Power BI DBT SQL BigQuery Data Modeling
  • E.Leclerc
    Data Product Owner
    RETAIL (LARGE RETAILERS)
    January 2023 - December 2023 (1 year)
    Ivry-sur-Seine, France
    In the data collection Squad of the IT department's Big Data project, I was the Data Product Owner responsible for scoping and analyzing business needs with the objective of providing data specific to business objects such as: the catalog of cash registers, stores, and products, sales data, discounts and benefits, store purchases and inventory, and regional purchasing centers. My responsibilities included:

    ▪ Defining technical and functional specifications for collecting, qualifying, and consolidating data, and then monitoring them as needed.
    ▪ Estimating necessary developments in collaboration with data engineers.
    ▪ Testing and validating deliverables to ensure alignment with business needs.
    ▪ Supervising production to detect anomalies and guarantee data integrity.
    ▪ Qualifying and continuously improving collected data to ensure its accuracy and relevance.

    Environment & Tools: Google Cloud Platform (Cloud Run, Storage, BigQuery), DBT, Airflow, Azure DevOps, Jira, and Confluence, Agile Scrum Methodology.
    Agile Project Management Functional Specifications Data Modeling Functional Testing Flow Monitoring
  • E.Leclerc
    Decision Support Project Manager
    RETAIL (LARGE RETAILERS)
    April 2021 - December 2022 (1 year and 8 months)
    Ivry-sur-Seine, France
    For the Marketing department of the fresh produce market, I held the dual role of decision support project manager and Data Analyst with the objective of optimizing data quality and processing.
    ▪ Defining technical and functional specifications for collecting, qualifying, and consolidating data, and then monitoring them as needed.
    ▪ Prioritizing and planning tool evolution or migration requests.
    ▪ Monitoring and coordinating developments with IT teams.
    ▪ Assisting and supporting business users: conducting workshops, creating dashboard mockups and dashboards on Power BI.
    ▪ Controlling the quality of deliverables at each project milestone and acceptance.

    Environment & Tools: Server (MS-SQL DB, SSIS), Jira, Confluence, Cloud Azure, Data Factory, Azure Synapse Analytics, Power BI, Azure DevOps, Agile Methodology.
    Power BI Desktop Azure Data Factory Azure DevOps Agile Methodology Requirements Gathering

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Education

  • Master in Information Systems Audit and Databases
    Ecole Nouvelle d'Informatique des Télécommunications et d'Economie
    2011
  • Microsoft Azure: Design a data solution
    Ib-Formation
    2021

Certifications

  • Microsoft Azure Fundamentals
    Microsoft
    2020
    Cloud Computing Microsoft Azure
  • Google Analytics Individual Qualification
    Google
    2020
    Google Analytics Web Analytics

Skill set

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