Freelancer profile translated to English.
Back to original languageAbout Stéphane
Data Engineer and expert in critical data architecture and Big Data pipeline industrialization (15 years of experience). I support CIOs in transforming massive and complex data into high-performing and scalable decision-making systems.
My core business: Data Engineering & Cloud Architecture.
From aerospace (Airbus) to public platforms, I design robust systems capable of processing large volumes with high demands for reliability and performance.
My areas of intervention:
🚀 Data Platform & Cloud**: Scalable architecture on **GCP(BigQuery, Cloud Run, Cloud SQL) andAWS**, **Dockercontainerization, legacy modernization, and cloud migration.
⚙️ Industrialized Data Engineering**: Design and development of automated ETL/ELT **pipelines(**Python**, advanced SQL, orchestration), CI/CD, data quality, and governance.
🛡️ Performance & Databases**: Audit, tuning, and optimization of high-traffic **PostgreSQLdatabases, advanced indexing, complex queries.
🌍 Bonus Geospatial Expertise**: Mastery of **Geospatial Data Engineering(**PostGIS**, **GeoServer**, complex spatial analyses), ideal if your projects involve a territorial, logistical, or geometric dimension.
French
Native or bilingual
English
Fluent
Spanish
Native or bilingual
Can work on-site
Toulouse (up to 50km), Paris (up to 50km)
Experience
- Airbus Defense & SpaceLead Data Engineer & Pipeline Architect (Big Data & Imaging)DEFENSE AND MILITARYJuly 2018 - Today (7 years and 11 months)Toulouse, FranceArchitecture, industrialization, and operation of Big Data pipelines for processing satellite imagery in critical contexts (Defense & Aerospace).Designed and developed satellite imagery processingpipelines(Python/SQL) with end-to-end orchestration and automation, reducing delivery times to near real-time and improving SLAs.Defined thedata architecture(models, flows, storage, exposure) for massive volumes and strong constraints of reliability, traceability, and reproducibility.OptimizedPostgreSQLdatabases (and PostGIS geospatial databases as applicable): audit, tuning, query/index optimization, improvement of performance and stability in global production.Implemented aCI/CDand quality approach (automated tests, data checks, industrialized deployments) to ensure reliable deliverables and reduce incidents.Performed impact analyses and multi-domain analysis models (agriculture, environment, water), adapting processing to business needs and operational constraints.Operational support and cross-functional expertise: diagnostics, team support, continuous improvement of production chains.Environment: Python, SQL, PostgreSQL, PostGIS, ArcSDE, ArcGIS Enterprise, CI/CD, automation, GCP, image processing.
- Etat de Jalisco, MexiqueCloud & Open Source Solutions Architect | Digital TransformationPUBLIC SECTORJanuary 2017 - June 2018 (1 year and 5 months)Guadalajara, MexicoInternational digital modernization mission ("Visor Urbano" project): a high-traffic public platform focused on territorial data.Designed an open-source, highly available,cloud-nativeGCP architecture for massive public consultation (sizing, resilience, monitoring).Deployed and operated a geospatial stack:PostgreSQL/PostGIS**, **GeoServer**, **Dockercontainerization, deployment industrialization.Developed high-performanceREST APIsfor data access (urban planning, land, licenses), including security, caching/optimizations, and best practices for exposure.Implemented **data governance**: integration of heterogeneous flows (cadastre, imagery, legal data), normalization, unique repository, and quality rules.Supported the dematerialization of complex business processes: scoping, modeling, production deployment, skills transfer.Environment: GCP, PostgreSQL, PostGIS, GeoServer, Docker, QGIS, GDAL/OGR, REST API, Open Data, data governance.
- Atelier Parisien d'Urbanisme (Apur)Data Management & Open Data ExpertPUBLIC SECTORJanuary 2010 - December 2016 (6 years and 11 months)Paris, FranceTechnical data/GIS referent for the management and valorization of data for the Metropolis of Paris.Administered and optimized referenceOracleandPostgreSQL/PostGISdatabases: performance, security, maintenance, support for over 40 expert users.Designed anOpen Datastrategy and launched the technical platform: publication pipeline, quality, documentation, standardization, and operation.Developed automatedPythongeoprocessing (ETL/processing) for thematic studies (climate, transport, energy) and recurring production.Supported the migration from CAD tools to **GIS**: change management, tooling, best practices, and team training.Structureddata governancepractices (cataloging, rules, lifecycles, reliability) to secure usage and accelerate delivery.Environment: Python, PostgreSQL, PostGIS, Oracle, GIS, ArcGIS, ETL/processing, Open Data, governance.
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Education
- DESS Urban Planning and Digital City ManagementInstitut Français d'Urbanisme2006DESS Urbanisme et Gestion Numérique des Villes
- Bachelor's and Master's degree in GeographyUniversité Jean Jaurès2004Licence et Maîtrise de Géographie