Freelancer profile translated to English.

Description

Freelance Data Analyst / Scientist with 6 years of experience, specializing in data mining, data science, and data visualization. I am proficient in SQL, R, RShiny, Python, and Power BI, and have worked on strategic projects for Hermès, RTE, EDF, Nespresso, and other companies. Trained at INSEA and Paris-Saclay University, I possess advanced expertise in data analysis across various contexts, from energy to luxury. Bilingual in French and English.

Languages

French
Native or bilingual
English
Native or bilingual

Workplace preferences

Can work on-site

Paris (up to 50km)

Kaggle
Kaggle Competition: House Prices - Advanced Regression Techniques
June 2025 - August 2025 (2 months)
Paris, France
Predicting House prices with a regression model:
1) EDA (histograms, correlations, outliers...)
2) Models: Linear (Ridge/Lasso), Gradient Boosting
3) Comparison between preprocessing techniques and models
Link:
https://github.com/sarabnclui
Data science Machine learning Data analysis Python
Hermès Sellier
Data Consultant
LUXURY GOODS
October 2024 - Today (1 year and 8 months)
Pantin, France
Script Optimization: Improving raw material procurement processes for prototype campaigns (press, fashion show), maximizing the number of delivered prototypes while reducing critical errors. Each optimization has contributed to saving valuable hours and limiting financial losses related to insufficient production.
Error Resolution: Debugging and correcting anomalies to ensure data reliability.
Tool Development: Creating a user-friendly Shiny interface to simplify business processes, with increased adoption by the team.
Reporting Improvement: Implementing an automated reporting system to identify errors faster.
Documentation and Sharing: Writing comprehensive documentation and disseminating best practices to foster collaboration and future maintenance.
RShiny Oracle SQL Developer R language
Réseau de Transport d'Electricité
Data Analyst
ENERGY AND UTILITIES
March 2021 - July 2024 (3 years and 4 months)
Paris, France
Development of queries for the National and Regional Energy Review of France
Reprocessing of queries from the old IS and rewriting for the new IS with R and Python instead
of SAS
Detection of inconsistencies in the new IS
Documentation of queries
Explanation to the business specialists the use of queries
Organization of queries on Git
Development of a package to facilitate the use of tables from the new IS
SQL R Gitlab Python (Programming Language) Python Programming