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Sadia CisseSC

Sadia Cisse

Data Analyst

€250/day
Paris, FR
0-2 years
Data Visualization (Power BI)
Python (pandas, matplotlib, scikit-learn)
Data Cleaning / Data Preparation
Data Analysis & Machine Learning
SQL (PostgreSQL, MySQL) & NoSQL (MongoDB)

Average response time: 1 hour

Freelancer profile translated to English.
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About Sadia

You have data but don't know what to do with it?

I help you understand it simply and extract useful insights through clear dashboards and easy-to-read analyses.

I am a Data Analyst and I help companies better understand their data.

Today, a lot of data is difficult to read and use. My role is to make it simple and useful. I take data, clean it, analyze it, and then transform it into clear and easy-to-understand dashboards.

I work with tools like Power BI, Python, SQL, and NoSQL (MongoDB).

I can help you to:

  • create simple and effective dashboards
  • analyze your data to draw conclusions
  • clean and organize your files
  • manage and structure your databases

I adapt to your needs and take the time to understand your problem to offer a clear solution.

My goal is simple: to help you see more clearly and save time.

  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • SNCF VOYAGEURS
    Data and Reporting Officer
    September 2025 - Today (11 months)
    Saint-Denis, France
    Within the (MIQM) department of the SNCF Voyageur Materials Directorate, I hold a role focused on the management, quality, and valorization of data used to monitor the production of 10 industrial technical centers in France. I am involved in the entire data processing chain, from collection to making it available in the form of actionable indicators.

    My data missions include:

    Data cleaning & data structuring: simplification, normalization, and quality improvement of large files from heterogeneous sources.
    Automation of dataset updates (scripts, queries, Power BI models, Power Query).
    Construction of key indicators for analyzing the performance of technical centers.
    Design of Power BI dashboards for better visualization and interpretation of business data.
    Technical documentation in the form of operating procedures to ensure the reproducibility and sustainability of reporting.
    Continuous improvement of the data workflow to reduce manual handling and limit errors.
    This work-study program strengthens my skills in data management, data visualization, automation, decision support reporting, and data quality, in a demanding industrial environment where information reliability is essential.
    Industrial Data Analysis Microsoft Power BI Power BI DAX Power Query Data visualization
  • Direction Générale des Finances Publiques
    IT Operations and Data Management
    June 2025 - August 2025 (2 months)
    Paris, France
    - Server management (Cobbler, Puppet)
    - Virtualization (OpenNebula)
    - Backups and storage (TINA, SAN)
    SQL Storage Management

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Education

  • BUT Data Science
    Université Sorbonne Paris Nord
    2026
    Analyse de données Comprendre et exploiter des données Faire des statistiques (moyenne, variance, corrélation…) Interpréter les résultats Objectif : donner du sens aux données Programmation Python (pandas, matplotlib, scikit-learn) R (statistiques) Manipulation de données Objectif : automatiser l’analyse Bases de données SQL (PostgreSQL, MySQL) NoSQL (MongoDB) Création, gestion et interrogation de bases Objectif : stocker et organiser les données Data visualisation Power BI Excel Création de dashboards Objectif : rendre les données compréhensibles Machine Learning Modèles (régression, classification) Prédiction à partir des données Objectif : aider à la prise de décision Informatique générale Programmation Développement web Objectif : comprendre l’environnement technique Gestion de projet & communication Travail en équipe Présentation de résultats Rédaction de rapports Objectif : expliquer simplement des résultats techniques

Skill set

Reporting & KPI
Data science

Categories