Freelancer profile translated to English.
Back to original languageAbout Mathis
IT engineer specialized in Data Engineering, with 3.5 years of experience, currently Data Engineer at AXA and formerly Data Analyst at EDF, in demanding and high-volume data environments.
I design and industrialize data pipelines with Python, SQL, and PySpark, deployed on Azure and Databricks. I also master Power BI and Power Automate for reporting and automation of business processes.
Concretely, my missions have allowed me to reduce the processing time of certain data flows by 90% and to multiply team productivity by 30 through the automation of repetitive manual tasks.
I can assist with: auditing and optimizing existing pipelines, automating business processes and Power BI reports, or supporting your teams on the Azure/Databricks ecosystem.
Determined to transform your data into a real lever for decision-making and growth, I quickly adapt to new technical and business contexts.
French
Native or bilingual
English
Fluent
Portuguese
Fluent
Spanish
Conversational
Remote only
Primarily works remotely
Experience
- AXA FRANCEData EngineerBANKING AND INSURANCEMarch 2025 - Today (1 year and 4 months)92000 Nanterre, France• -90% production time: migration of dozens of Access/VBA scripts to Python/Databricks ETL pipelines, reducing generation time from several days to 1 hour• +100 service quality indicators: development of a 360° Power BI dashboard covering 4 business areas, monitored by AXA Santé Collective Management• End-to-end orchestration: data flows (collection, transformation, calculation) via scheduled Databricks jobs and Power Automate flows• Data steward: Data Lake migration – mapping fields between the old Data Warehouse and the new Data Lake, quality control, and data governance• Maintenance and evolution (10 Power BI reports): data volumes in gigabytes (claims, contracts, customer feedback) from dozens of sources – transverse team of 5 people
- EDF SAData AnalystENERGY AND UTILITIESSeptember 2022 - September 2024 (2 years)La Défense, Puteaux, France• x30 productivity gain: end-to-end automation of opt-in/opt-out KPI production (30 min to 1 min) via Python scripts, procedures, and SQL jobs• Commercial Module: redesign of an EDF/competitor market share projection tool – migration from RStudio/VBA to Python• 14 sources consolidated (OLAP, Power BI, Excel): redesign of the CAP Performance Summary report driving EDF's business market annual objectives• Maintenance and evolution (10 Power BI dashboards): data volumes in gigabytes (millions of meter readings, millions of contracts) from dozens of sources – Scrum team of 10 people
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Education
- Master Big Data & Machine LearningEFREI Paris Panthéon-Assas2024• Diplôme d'ingénieur (titre CTI), 2 ans en apprentissage • Spécialisations : Data Science, Machine Learning, DataViz, DevOps, NLP, Data Engineering, BDD
- Computer Science Bachelor's DegreeCY Cergy Paris Université2022• L1 commune aux différentes filières • L2 mathématiques/informatiques • L3 spécialisation informatique
Certifications
- Microsoft Certified: Azure FundamentalsMicrosoft2024
- Test of English for International Communication (TOEIC)Educational Testing Service (ETS) Global B.V.2023