Freelancer profile translated to English.
Back to original languageAbout Jean-Daniel
🚀 Senior Data Analyst | Power BI • SQL • BigQuery | SAP Business Objects Migration | Modern Data Stack
Many companies have large amounts of data but struggle to transform it into reliable and actionable indicators for decision-making.
I support data and business teams in structuring, analyzing, and leveraging their data to build high-performing decision-making tools.
🎯 Expertise
- Data Analysis & Data Storytelling
- Creation of Power BI / Looker-LookML / MyReport / SAP Business Object dashboards
- Power BI Dashboarding for Retail
- BI Migration: SAP Business Objects → Power BI & Looker-LookML
- Data modeling and SQL optimization
- Modern Data Stack (BigQuery, dbt, modern BI tools)
đź“Š Achievements
- 500+ interactive dashboards developed
- 5+ companies supported
- SQL query optimization reducing analysis time
- 70% reduction in analysis time on certain projects
Interventions notably at ADEO / Leroy Merlin, Orange France, Cofidis, and Supplay.
đź› Stack
Power BI (DAX, Power Query) • Looker-LookML • SAP Business Objects • BigQuery • SQL • Python • MyReport • Advanced Excel • SAS...
đź“Ť Paris / Lille / Full Remote
💶 Daily Rate: €500 Paris – €430 Lille & Remote
Available for freelance missions.
French
Native or bilingual
English
Conversational
Remote only
Primarily works remotely
Experience
- ORANOData AnalystENERGY AND UTILITIESMay 2026 - July 2026 (2 months)Paris, France📅 Project: SAP BO 4.3 Decision-Making Migration & Redesign🎯 Project ObjectiveComplete reconstruction of universes and reporting assets (+1000 users)in an agile environment.🚀 Interventions🔹 Requirements gathering and translation: Analysis of functional specifications and business mockups to design target architectures.🔹 **Design and development of SAP BO universes**: Complete creation of the semantic layer from complex SQL queries and technical documentation.🔹 **Governance and modeling**: Fine structuring of business objects, analysis dimensions, and aggregate indicators to ensure data consistency.🔹 **Web Intelligence (WebI 4.3) Reporting**: Development, design, and deployment of decision-making reports meeting business requirements.🔹Performance optimization: Audit and optimization of SQL queriesand universe structure to reduce processing times.🔹 **Testing and continuous delivery**: Anomaly management (bug fixing) and user acceptance testing within short-deadline sprints.🔹 Change management:Facilitation of technical/business exchangesand support for end-users during deployment.🛠Data StackSQL Server • SAP BO 4.3 (Web intelligence, IDT, CMC) • SQL • PowerBI, DAX, Power Query • Agile Methodology / Sprint.
- BOUCHERONData AnalystLUXURY GOODSApril 2026 - April 2026Paris, France📅Project “Voice of Customer” – Data Analyst / BI Engineer🎯 Project ObjectiveLeveraging customer satisfaction data and performance monitoring.🚀 Interventions🔹Design & Development of Looker Studio dashboardsfocused on Customer Experience (satisfaction KPI monitoring).🔹 Data modeling through SQL query development on Google BigQuery.🔹 Access security by implementing Row Level Security (RLS).🔹 Interconnection of identity systems (Microsoft SSO & Google Cloud Identity) for secure report integration into the business tool.🔹Large-scale deployment and change management for over 1000 end-users.🔹 Methodological support for business teams (training, workshops) and data governance structuring.🛠Data StackGoogle Data Studio • BigQuery • SQL • Connected Google Sheets • RLS.
- LEROY MERLINData analystRETAIL (LARGE RETAILERS)October 2024 - December 2025 (1 year and 2 months)Lille, France📅BI Modernization Program – Migration from SAP Business Objects to Power BI & Looker📍 SUPPLY Data Squad – BOARDNEXT TeamAs part of the group's Business Intelligence modernization program, I contributed to thedecommissioning of SAP Business Objects and the migration of dashboards to a Modern Data Stack based on Power BI, Looker, and BigQuery.🎯Project ObjectiveReplace thelegacy SAP Business Objects BI environmentwith modern tools to improve:
- analysis performance
- indicator reliability
- business team autonomy
🚀 Interventions.- Migration ofSAP Business Objects reports to Power BI and Looker
- Validation and reliability ofautomatically generated Looker dashboards
*Analysis of discrepancies between the legacy environment and new dashboards- Performance optimization (**BigQuery, SQL, DAX**)
- Improvement of the BI migration tool used internationally
- Implementation ofdata quality and consistency checks
- Training and support forbusiness teams on the new BI tools
🛠Data StackPower BI (DAX, Power Query) • Looker • BigQuery • SQL • Connected Google Sheets • SAP Business Objects • Jira • Confluence.
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Education
- Master in Information Systems for Decision Support (SIAD)University of Lille2019L’objectif du Master SIAD (Systèmes d’information et aide à la décision) est de répondre à la demande croissante de spécialistes maîtrisant les aspects techniques de la chaîne informationnelle (informatique décisionnelle), capables d’apporter un diagnostic quantitatif des situations et une approche prévisionnelle de la décision, en s’appuyant sur une connaissance profonde des problématiques métiers.