Freelancer profile translated to English.
Back to original languageAbout Guillaume
Welcome to my profile!
I am a Data Analyst based in Paris, specializing in transforming data into strategic levers.
Thanks to my Master's degree in Applied Mathematics and Statistics, I have developed expertise in data processing, analysis, and visualization, which I have put into practice during my experiences in demanding sectors such as construction and sports retail.
🔧Tools mastered:PowerBI, Tableau Software, SQL, Python, R, Advanced Excel, Snowflake, and Google Cloud Platform.
🎯My mission?To support business teams with in-depth analyses and interactive dashboards to optimize performance and accelerate decision-making.
📊Key skills
- Advanced data analysis: transforming complex data into impactful recommendations
- High-performance dashboards: creating visual tools for strategic management
- Data management: structuring databases for reliable data exploitation
🚀What I will bring you
- Informed decisions thanks to precise strategic insights
- Performance gains through intuitive and personalized tools
- An approach combining technical expertise and business vision
💼Experiences
- Eiffage Rail (Construction sector)
• Optimization of vehicle flows through the analysis of travel data
• Development of performance monitoring tools (KPI APIs)
• Data-driven recommendations to improve efficiency and reduce operational costs
• Support for decision-making on logistical and environmental plans
- Decathlon (Retail / Sports sector)
• Sales analysis based on market behaviors and national disparities
• Creation of interactive dashboards and automation of processing pipelines
• Advanced market research on international sports preferences
Ready to transform your data into strategic actions? Contact me to discuss your challenges.
French
Native or bilingual
English
Conversational
Chinese
Basic
Can work on-site
Paris (up to 20km), Lyon (up to 20km), Lille (up to 20km), Bordeaux (up to 20km)
Experience
- Eiffage Rail IDFVehicle Flow AnalystCIVIL ENGINEERINGMarch 2024 - July 2024 (4 months)- Ensure data quality, security, and management- Support decision-making and understanding of key indicators (performance monitoring, APIs, KPIs, dashboards)- Improve the operational efficiency of the vehicle fleet (optimization of travel routes)Added value:innovative and team spirit, project management, autonomy
- DecathlonData AnalystSPORTSDecember 2022 - January 2023 (1 month)- Clean, transform, and analyze data architecture- Identify key sales drivers based on national variabilities (interactive dashboards, pipelines)Added value:sense of responsibility and organization, statistical modeling
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Education
- MASTER | Modélisation statistique stochastiqueUniversité de Bordeaux2024
- LICENCE | Mathématiques informatique appliquées aux sciences humaines et sociales parcours économieParis Diderot2021