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Justin Diomaye NdiayeJD

Justin Diomaye Ndiaye

Data analyst

€600/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Justin Diomaye

Do you manage complex data volumes (projects, performance, indicator tracking) but lack clear, reliable, and actionable visibility to drive your activities?

I support organizations (NGOs, institutions, companies, multi-country projects) in structuring, analyzing, and leveraging their data to support informed decision-making.

With over 8 years of experience in data analysis and Business Intelligence, I work across the entire data value chain:

- Analyzing your business needs and defining key performance indicators (KPIs)
- Structuring and modeling data (databases, schemas, flows)
- Automating data processing (ETL/ELT – Python, SQL, API)
- Designing clear and interactive decision-making dashboards
- Implementing data quality control processes
- Presenting results with a pedagogical and action-oriented approach

My goal: to transform your data into an operational and strategic lever, not just numbers.
  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • ONG SOLTHIS
    National Monitoring and Evaluation/ICT Expert
    MEDICAL
    November 2024 - Today (1 year and 7 months)
    Senegal
    Business Needs Analysis Design of the Analysis Model: Develop the SERA plan/tools. Deployment of Data Tools: Train teams on the use of collection (ODK/CommCare/DHIS2) and analysis (Excel/Power BI) tools. Develop best practice guides on data quality monitoring.
    BI Strategy Microsoft Power BI Technical Project Management Training Facilitation
  • Medic mobile
    Data Developer
    October 2021 - December 2025 (4 years and 2 months)
    Data Modeling & Structuring: Design and implement the technical and functional structure of platforms for 4 countries. Reporting and Decision-Making Data Visualization: Create over 20 interactive dashboards with Power BI or Superset for key indicator analysis. ETL Automation (Extract-Transform-Load): Develop and maintain over 10 data integration (ETL) scripts between the CHT platform and the DHIS2 system. Data Governance: Ensure the maintenance of data models and technical documentation of analysis pipelines. Data Quality Control: Implement validation procedures and tests to ensure accuracy, completeness, and compliance. Support and Training (Data Storytelling): Provide analytical support to stakeholders and conduct training on the proper use of dashboards. Project Management: Manage analysis and reporting deliverables for 4 West African countries.
  • Kasana
    Monitoring and Evaluation/ICT Expert
    July 2024 - August 2025 (1 year and 1 month)
    Senegal
    KASANA SANSAS-Solthis Project Diagnose project needs Revise and digitize data collection, processing, and analysis tools and processes.

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Education

  • MSc 2
    INSEEC MSc
    2026
    MSC 2
  • MASTER 2
    Université Alioune DIOP de BAMBEY
    2016
    MASTER 2

Skill set

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