Freelancer profile translated to English.
Back to original languageAbout Youssef
Hello and welcome to my profile!
A Data Analyst Consultant specializing inPower BI**, I help companies transform their data into performance drivers through interactive, automated **dashboardsand tailor-made **analyses**.
With over5 yearsof experience, I am proficient inPower BI**, **Python**, **SQL**, **BigQuery, and**DBT** to cover the entire data chain, from transformation to visualization.
I pay particular attention to informationdesignand dashboardUX/UIto make tools clear, intuitive, and truly **decision**-oriented.
I work across various sectors (Customer Marketing, Pricing, CSR, **Retail**, Industry) to improve performance **management**.
📍 Hauts-de-France, Belgium, Île-de-France, or remote.
French
Native or bilingual
English
Fluent
Arabic
Native or bilingual
Standard Moroccan Tamazight
Native or bilingual
Can work on-site
Paris (up to 50km), Lyon (up to 50km), Clermont-Ferrand (up to 50km), Lille (up to 50km), Bordeaux (up to 50km)
Experience
- Leroy MerlinConsultant Data AnalystRETAIL (LARGE RETAILERS)February 2025 - October 2025 (8 months)Lille, FranceLeroy Merlin,a major player in the DIY retail sector, is undergoing a data-driven transformation to optimize the local performance of its stores.As part of theCustomer Marketingdepartment, I contributed to the design and automation of strategic analysis tools to support business teams and store managers in their operational and marketing decisions.Collaboration with:Business teams, store managers, Product Owners, technical teams, data analysts, and marketing managers.My key contributions:
- Deployment of version 2 of a strategic store performance monitoring tool, with over 15 interactive pages (traffic, revenue, campaigns, contactability, sales potential).
- Implementation of Row-Level Security (RLS) for secure and personalized data access based on user profiles.
- Setup of an automated dynamic subscription system, optimized by AI, for sending personalized monthly reports.
- Automation of Power BI dashboards with secure cloud data integration for reliable and regular reporting.
- Advanced data modeling and construction of KPIs tailored to local needs.
- Regular communication on tool evolutions, presentation of new features, and user adoption support.
- Execution of tailor-made ad hoc analyses with data extraction, processing, and operational recommendations.
- Facilitation of workshops and training to enhance the autonomy of field users.
- Analytics monitoring and proactive identification of anomalies affecting data flows.
Technical Environment:Python, SQL, Power BI (Desktop, Service, DAX, Power Query), Power Automate, Python, Microsoft Copilot, GCP, BigQuery, GitHub, Jira, Trello.Areas of Expertise:Performance monitoring, marketing analytics, segmentation, omnichannel retail, decision support reporting, agile methodology. - AtecnaData Analyst / EngineerSOFTWARE PUBLISHINGJanuary 2025 - October 2025 (9 months)Lille, FranceAtecnais an engineering and digital transformation consulting firm, supporting its clients from strategy to operational implementation.As a data consultant at Atecna, I develop automated dashboards and decision support tools using Power BI, SQL, Python, BigQuery, and DBT.Data Monetization:Development of a POC for a group specializing in luxury retail, aiming to demonstrate the commercial value of data and propose monetization strategies to suppliers.Key achievements:
- Collection and integration of data from multiple sources (APIs, CSV files, ECH) for centralized consolidation.
- Data modeling and transformation with dbt Core in Google BigQuery for optimized analysis.
- Creation of interactive dashboards in Power BI to visualize commercial and logistical performance.
- Identification of consumption trends and inventory optimization opportunities to improve profitability.
- Development and proposal of data monetization models to suppliers (premium access to insights, customized dashboards, data-driven subscriptions).
In parallel, I am assistingLeroy Merlinin exploiting and optimizing their data. - ColibrisData Analyst / EngineerSOFTWARE PUBLISHINGJanuary 2024 - December 2024 (1 year)Balma, France**Colibris**, a publisher of an innovative SaaS solution dedicated to contract performance and usage management in corporate environments (IT, Telecom, etc.), was developing the 3rd version of its platform by integrating advanced CSR and Real Estate modules to meet the environmental and economic challenges of its clients.Within the development team, I led the design, automation, and deployment of the new CSR and Real Estate modules, ensuring the quality, reliability, and relevance of the data provided.Collaboration with:Business teams, developers, CSR managers, and clients for scoping, validation, and deployment of solutions.My key contributions:
- Identification and automated integration of data from various sources (Ademe, EPEAT, EPREL, InfoClimat, etc.).
- Modeling and optimization of SQL Server databases (reference, IT, Real Estate) and stored procedures for indicator calculation.
- Design of custom indicators for monitoring economic and environmental performance.
- Forecasting of carbon emissions and energy consumption.
- Quarterly ad hoc analyses with personalized reporting to clients.
- Communication of functional evolutions, presentation of new features, and user support.
- Writing functional and technical documentation to ensure the sustainability of developments.
- Proposing improvements to the back-office and reporting, challenging business and technical choices.
Technical Environment:Python, T-SQL, SQL Server, Power BI, Azure Functions, Microsoft Azure, GitHub, Azure Data Studio, Docker.Areas of Expertise:Data engineering, workflow automation, modeling, CSR and real estate indicators, forecasting, ad hoc analysis, communication, agile methodology.
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Education
- Master 2: Distributed Systems and Data Science Technologies (SDTS), Mathematics and Computer ScienceUniversité Paris-Est Créteil (UPEC)2023Master 2 : Systèmes Distribués et Technologies de la Data Science (SDTS), Mathématiques et informatique
- Master 1 Computer Science: New Technologies for Information and Decision Support Systems, Computer ScienceINSA Hauts-de-France2022Master 1 Informatique : Technologies Nouvelles des Systèmes d'Information & Décisionnels, Informatique
Certifications
- Data Visualisation with : BI, SQL Server, PostgreSQL, ExcelUdemy2023
- Project ManagementUniversité Polytechnique Hauts de France2023