Woly Sarr, Data Analyst

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Description

📊 Data Analyst | BI | Python | SQL | Power BI

I am an independent Data Analyst and consultant specializing in data analysis, Business Intelligence, and data visualization.

I help companies transform their data into actionable insights to improve decision-making and optimize their performance.

💼 Areas of intervention

Data analysis (Python, SQL, Excel)

Creation of interactive dashboards (Power BI, Excel, LibreOffice)

Data cleaning and preparation

Exploratory data analysis (EDA)

KPI calculation and monitoring

Business Intelligence (SSIS, SSAS, SSRS)

Data processing automation

Document analysis and NLP

🛠️ Technologies

Python · Pandas · SQL · Power BI · Excel · Matplotlib · SSIS · SSAS · SSRS

📈 What I bring

Clear and professional visualizations

Business-oriented analyses

Actionable insights for decision-making

Automation and process optimization

Dynamic and interactive dashboards

🚀 Project examples

Interactive sales analysis dashboard

HR Analysis: performance, engagement, and salaries

BI decision support system (Data Warehouse, ETL, Reporting)

Semantic analysis and NLP on scientific documents

Available for freelance missions, data support, and BI projects.

Industry field of expertise

Languages

French
Native or bilingual
English
Conversational

Workplace preferences

Can work on-site

Orléans (up to 50km), Paris (up to 50km), Lyon (up to 50km), Lille (up to 50km), Le Mans (up to 50km)

Auto Entrepreneur
Employee Performance Analysis
May 2026 - May 2026
Analysis of employee performance from an HR dataset to identify gaps in performance, engagement, and compensation.

Work performed:
• Statistical analysis of HR data
• Visualization of distributions
• Outlier detection (IQR method)
• Cross-analysis between performance, engagement, and salary
• Production of HR insights

Technologies:
Python, Pandas, Matplotlib
Python Matplotlib Pandas
Auto Entrepreneur
Interactive Sales Analysis Dashboard
April 2026 - April 2026
Creation of an interactive dashboard to track sales performance by region and category.

Work performed:
• Data cleaning and preparation
• KPI calculation (sales, profit, margin)
• Creation of pivot tables
• Data visualization
• Regional performance analysis
• Production of business insights

Technologies:
Excel, LibreOffice Calc, Python, Pandas, Matplotlib
Microsoft Excel Data visualisation Python data-cleaning-and-preprocessing Matplotlib
CHU d'Orléans
Interim Mission
HEALTH AND WELLNESS
May 2024 - December 2025 (1 year and 7 months)
Orléans, France
Optimize and improve the organization and working methods within a department to increase efficiency, productivity, and quality of results obtained.

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Master's Degree
University of Tours
2024
Master
Master of Information Systems
Dakar University Distributed
2018
Master Système d'information

Check out Woly's education

Data Analyst