About Xavier
15 years of experience at the core of Data as a Data Engineer, Analytics Engineer, and Head of Data for startups/scale-ups (OpenClassrooms, Bankin') and large corporations (Hermès, Veolia, Vallourec, Cdiscount, Pepsico, Groupama, IBM, ...).
Snowflake and Databricks certified
Proposed Services
• Data Strategy: Technical advising, team organization, recruitment, and training.
• Expertise: Datawarehouse, Datalake, ETL, Modern Data Stack, Event-based pipelines, Real Time
• Support: I also take on short-term assignments for data collection, exploration, and analysis (Data Analysis, Data Science, Web Scraping, ...).
Principal Experiences
• Data Architect: Designed and built from the ground up a data platform powering both a customer-facing analytics application and internal data transformation workflows
• Head of Data (Bankin'): Designed and implemented the Data platform, organized the team (Data Engineers and Data Analysts), led and managed the team.
• Data Engineer (OpenClassrooms, Cdiscount, Vallourec, Veolia, Hermès, ...): Designed, developed, deployed, and maintained data platforms and pipelines.
• Analytics Engineer (OpenClassrooms, Bankin'): Developed DBT data pipelines, provided best practices and technical guidance.
Additional Experiences
The diversity of the projects I’ve undertaken has given me a comprehensive vision of the Data profession spectrum.
• Machine Learning (Bankin', Cdiscount, OpenClassrooms): Clustering, classification, ML pipeline orchestration.
• Data Analysis (Hermès, Veolia, Ricoh, Groupama, Pepsico): Reporting (Metabase, Cognos, Tableau, Streamlit).
French
Native or bilingual
English
Fluent
Spanish
Conversational
Basque
Basic
Can work on-site
Biarritz (up to 50km), Bordeaux (up to 50km), Nantes (up to 50km)
Experience
- SportsDynamicsData ArchitectSPORTSFebruary 2025 - Today (1 year and 4 months)Paris, France- Built POC platform for SportsDynamics from single-league to multi-league analytics platform, supporting 30+ competitions simultaneously and enabling SportsDynamics to target professional scouting use cases- Assisted in building product data user experience including data access, visualization dashboards, and new KPIs
- OpenClassroomsStaff Data Engineer & Data Analytics EngineerEDUCATION AND E-LEARNINGAugust 2023 - January 2025 (1 year and 4 months)Biarritz, FranceStaff Data Engineer (Freelance)
- Developed and maintained over 20 Airflow pipelines and external ETL workflows.
- Optimized CI/CD pipelines and infrastructure-as-code for improved deployment reliability and efficiency.
- Administered Snowflake data warehouse, including workload monitoring, performance optimization, and permissions management.
- Established Data Contracts in partnership with Product and Finance teams to ensure data reliability.
- Designed and deployed Personalized job offer recommendations and Company reference matching algorithms into production.
Staff Analytics Engineer (Freelance)- Provided technical expertise, guidance, and support to the team on data mart modeling with DBT and best software development practices.
- Nearly eliminated billing errors by completely redesigning a data mart, resulting in significant financial savings.
- Enhanced and optimized mentor payment data mart to reduce costs.
- Bankin'Head of DataBANKING AND INSURANCENovember 2019 - March 2022 (2 years and 4 months)Biarritz, FranceHead of Data
- Defined the company’s Data Strategy: created the roadmap and led the data community for 50+ business users.
- Managed the Data Team (Data Analysts and Analytics Engineers): defined objectives, implemented skill development plans, facilitated team interactions.
- Led data projects end-to-end: stakeholder alignment, planning, technical solution design, execution, progress monitoring, and change management.
- Designed, supervised, and maintained the technical architecture of the data platform (ETL, pipelines, Data Warehouse, Data Lake, CI/CD, Reporting)
- Conducted training on all Data subjects (Data Engineering, Data Analysis, Data Science, ML Engineering).
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Education
- DUT Génie Télécommunications et RéseauxIUT1 Grenoble2006
- Ingénieur Réseaux et Systèmes d’InformationENSEIRB - MATMECA2009Formation effectuée en apprentissage chez IBM