Xavier Mazellier
Data Engineer, Data Architect
2 recommandations
Salaire / Taux journalier
2 personnes recommandent
64200 Biarritz, France
Mobilité : Bordeaux
Freelance, ouvert au CDI
À distance uniquement
Expertises
Langues
À propos
Introduction
Data Engineer with 15+ years building scalable solutions across diverse industries. Expert in Snowflake, AWS, Apache Spark and modern data stack (dbt). Proven track record delivering pragmatic technical solutions from POCs to production systems serving millions. Snowflake and Databricks certified.
Expérience de travail
Data Architect
SportsDynamicsFreelance
janv. 2025 - Présent
1 an 10 mois
64200 Biarritz, France
Designed and deployed an end-to-end data platform (AWS, ClickHouse, Airflow, dbt) for a football analytics SaaS product serving professional clubs. Re-architected dimensional model and industrialized Data Science pipelines.
IBM Cognos BI Consultant
Belharra
nov. 2009 - Présent
17 ans
Consultant décisionnel chez Belharra SAS (partenaire ValueNet IBM Cognos), intégrateur des solutions IBM Cognos BI et IBM Cognos Express en région Sud-Ouest. Cognos BI / Cognos TM1
OpenClassroomsFreelance
sept. 2023 - janv. 2025
1 an 5 mois
Paris, France
Staff Analytics Engineer
avr. 2024 - janv. 2025
10 mois
Paris, France
Provided technical expertise on dimensional modeling and dbt best practices.
Staff Data Engineer
sept. 2023 - mai 2024
9 mois
Paris, France
Administered Snowflake, developed 20+ Airflow pipelines, co-created Data Contracts with Product teams. Deployed ML algorithms into production (recommendations, company matching).
Bankin'
nov. 2019 - mars 2022
2 ans 5 mois
Remote, Oregon 97458, États-Unis
Head of Data
août 2020 - mars 2022
1 an 8 mois
Remote, Oregon 97458, États-Unis
Led data platform processing 80M bank accounts daily. Defined company-wide data strategy, managed Data team (Analysts, Analytics Engineers), drove cross-functional projects from alignment to change management.
Senior Data Engineer
nov. 2019 - août 2020
10 mois
Remote, Oregon 97458, États-Unis
Data Engineer
VallourecFreelance
oct. 2018 - oct. 2020
2 ans 1 mois
Rouen, France
Built real-time production monitoring solution (Scala, Spark, Kafka, Kibana). Improved pipeline performance by 50x through migration to Spark architecture.
CdiscountFreelance
oct. 2018 - oct. 2019
1 an 1 mois
Bordeaux, France
Lead Data Engineer
janv. 2019 - oct. 2019
10 mois
Bordeaux, France
Set up and operated Hadoop Cloud Data Platform. Designed GDPR compliance solution in high-risk environment. Developed ETL Pipelines.
Data Solutions Architect
oct. 2018 - janv. 2019
4 mois
Bordeaux, France
Developed ML solution (clustering/classification) in Scala/Spark on Azure handling 100M requests/day.
Data architect
Playground / Ride O'Meter
janv. 2016 - juil. 2016
7 mois
64600 Anglet, France
Ride O'Meter is a media coverage analytic platform designed for sports brand and athletes. With a focus on action and outdoor sports, the web application provide valuable insights on brand and sponsored assets exposition through various specialized media (print, websites, social media). Responsibilities: · Define the technical strategy and orientations, organized partnership with technology providers · Manage the software development team, define personal and team objectives and incentives · Implement a project management framework · Design and implement data architecture and analytics platform
Entrepreneur (Side Project)
Espròva
déc. 2014 - déc. 2015
1 an 1 mois
64500 Saint-Jean-de-Luz, France
Started as a side project, I developed Espròva, a sport event marketplace and marketing platform.
Business Intelligence Consultant
BGFi Consulting
août 2011 - déc. 2014
3 ans 5 mois
Paris Area, France
:: Senior Consultant :: Business Intelligence project management (Reporting et Datawarehouse) Technical lead on IBM Cognos ( 8 / 10 / Cognos Express), Presales and technical support to sales team Training for technical and business users Manage an offshore service team Manage junior consultants team :: Operational and Human Resource management :: Annual assessments for junior Consultants :: Tableau Software Technical Lead :: Promote Tableau to the Executives and to our customers Training PoC and Business cases writing Environnement technique : Cognos BI, Cognos TM1, Cognos Transformer, Tableau Software, ...
Data warehouse Engineer and Support Manager (contract)
Veolia Water Technologies
janv. 2013 - oct. 2014
1 an 10 mois
Paris Area, France
Responsibilities: · Provide IBM Cognos technical expertise among worldwide business key user and local BI team · Develop ETL data integration pipelines from business data sources to the enterprise data warehouse · Develop IBM Cognos BI reports · Manage an offshore BI support team in Tunisia (3 people) · Manage evolution and incident requests of the data warehouse data integration pipelines · Train business and technical users to Data warehouse design principles and IBM Cognos BI suite Technical environment: IBM Cognos 10 BI, IBM Cognos DataManager, Oracle, JD Edwards
Data warehouse and reporting engineer
Hermès
janv. 2012 - oct. 2012
10 mois
Paris Area, France
Responsibilities: · Develop IBM Cognos Data Manager ETL data integration pipelines · Develop IBM Cognos BI reports · Develop IBM Cognos Transformer OLAP cubes Technical environment: IBM Cognos 8 BI, IBM Cognos DataManager, SQL Server, DB2-AS400, MOVEX/ M3
Apprenti Chef de projet applicatif
IBM
sept. 2006 - oct. 2009
3 ans 2 mois
Conduite d’un projet d'envergure mondiale de développement de programmes informatiques. Application permettant la mise en place d’une stratégie d’Achat : architecture de catalogue de produits et services, et assistance à la gestion d’appels d’offres. (Budget : 100K€/an, 250+ utilisateurs) - Analyse des besoins et rédaction du Cahier des Charges - Gestion de projet - Développement .NET - Formation et support - Modélisation et Industrialisation du procédé Conception d’univers et Reporting sous Business Objects pour le développement d’indicateurs Achats. Environnement technique : Visual Basic .NET, VBA, Excel, Business Objects
Formation
ENSEIRB-MATMECA
Ingénieur Réseaux et Systèmes d'Informations, Information Technology
Licences et certifications
SnowPro Core Certification
Délivré le : janv. 2026
IBM Cognos TM1 Developer
Délivré le : mai 2010