Jonathan Leroux
Chief Data Officer
Salaire / Taux journalier
Paris, France
Freelance, ouvert au CDI
Peut venir sur site
Expertises
Langues
À propos
Introduction
Chief Data Officer (20+ ans), spécialisé en transformations Data & IA à grande échelle : définition de la stratégie, de la gouvernance et des plateformes technologiques, afin de maximiser la performance, l’efficacité opérationnelle et la maîtrise des risques. Direction de Data & AI Factory de plus de 60 personnes, avec une approche orientée Data Mesh / Data Products et une industrialisation de bout en bout (BI & temps réel, MLOps/DataOps, GenAI et agents). Forte capacité d’alignement COMEX et d’
Expérience de travail
Chief Data Officer de transition (Freelance)
WorldlineFreelance
août 2025 - Présent
1 an 3 mois
Paris, France
Mission auprès du CTO : Recommandation d’un plan opérationnel cible (TOM) pour la Data et l’IA à l’échelle du groupe Worldline (18k personnes au total, +300 en Data & IA) ● Diagnostic technologique et opérationnel : audit Databricks/Azure & legacy, entretiens parties prenantes, revue des pratiques, cartographie des risques ● Alignement, adoption et business case : chiffrage financier, intégration du TOM au plan de transformation North Star 2030
Chief Data Officer
BPCE Payment Services
févr. 2019 - août 2025
6 ans 7 mois
Paris, France
– Led enterprise-wide data strategy and transformation initiatives, solving complex business challenges through cutting-edge data solutions. – Architected scalable and cost-efficient platforms -such as Data Mesh and Generative Al-powered Data Products (RAG) - on Google Cloud Platform (GCP) and Azure. – Reduced infrastructure costs by 50% while increasing data usage by 20x, significantly improving ROI. – Managed and inspired a cross-functional data team of 60+ professionals, implementing agile-at-scale practices to deliver with both speed and precision. – Implemented advanced, decentralized data governance frameworks, ensuring full regulatory compliance and data integrity across the organization.
Solocal
sept. 2010 - janv. 2019
8 ans 5 mois
92100 Boulogne-Billancourt, France
BI & Big Data Director
juil. 2015 - janv. 2019
3 ans 7 mois
92100 Boulogne-Billancourt, France
– Oversee the overall data infrastructure, including a multitenant and kerberized Hadoop Datalake. – Manage a team of BI & Data Engineers to design and industrialize data pipelines using Scala + Spark into a Cloudera Hadoop cluster. – Responsible for developing innovative platforms based on data and traditional BI dashboards for executives. – Led the migration and transformation of our big data architecture to the Google Cloud Platform.
Program Management Officer - PMO
juin 2013 - juil. 2015
2 ans 2 mois
Paris, France
– Led a team of 8 in the Digital Transformation program at SoLocal Group, overseeing 60+ projects. – Presented program updates to the Executive Committee, ensuring alignment with strategic goals. – Developed and implemented Key Performance Indicators to track project success and drive continuous improvement.
Marketing Program Manager
sept. 2010 - juin 2013
2 ans 10 mois
Sèvres, France
– Led the Program Management division at SoLocal Group, overseeing the delivery of advertiser offers across multiple platforms, including Mobile, +75k Web sites. – Launched a successful mobile & local display offer for Small & Medium Businesses. – Designed a new platform for managing Deals.
Founder & Managing Director
Next Mobile Step
mars 2010 - sept. 2010
7 mois
– Spearheaded the development of innovative mobile payment solutions, optimizing end user experience and driving revenue growth. – Oversaw the full mobile value chain, including architecture and quality assurance. – Ensured the successful implementation of strategic mobile strategies for clients.
Netsize
nov. 2006 - mars 2010
3 ans 5 mois
Professional Services Director
janv. 2009 - mars 2010
1 an 3 mois
– Led the creation of a new division at Netsize, focusing on organization, commercial offers, and financial reporting with a Profit & Lost approach. – Supported sales teams in penetrating new markets by developing new packaged solutions and Marketing Mix strategies. – Successfully delivered large international projects, including the Handset Manufacturer Application Store using Mobile Payment Mechanisms, targeting major handset manufacturers like Nokia, Samsung, and LG.
CIO & R&D Director
nov. 2006 - janv. 2009
2 ans 3 mois
Paris, France
– Led technical development of Netsize product portfolio including Mobile Payment Solutions and Messaging Gateways. – Managed the Netsize backoffice Information System, overseeing CRM, Order Management, and Financial reports. – Utilized Microsoft technologies such as .NET, SQL Server, and IBM/Cognos BI tools for efficient operations.
Platform Development Director
Netsize
déc. 2001 - oct. 2006
4 ans 11 mois
Paris, France
– Led the technical development of mobile payment solutions, messaging gateways, and service delivery platforms in the Paris Area. – Managed a team of developers, database managers, and coding when necessary. – Took the lead in designing most of the products.
Chief Technology Officer
Cleade
août 2000 - nov. 2001
1 an 4 mois
– Co-founder - R&D Team Manager – Project Manager for key accounts : HR Software, Mobile Solutions
Project Manager
Aldea, Conseil en Organisation et Systèmes d'Information
juil. 1996 - juil. 2000
4 ans 1 mois
– Project Manager HR Software (Skills Management, Recruiting process, ...) – Development Engineer
Formation
ISTY - Institut des Sciences et Techniques des Yvelines
Master's degree in Engineering, Computer science
1994 - 1997
3 ans 1 mois