Freelancer profile translated to English.

Description

Expert Talend & Data Engineer | +10 years of experience | Data Migration & Quality

Data consultant with over 10 years of experience, including 9 years with Talend Data Integration, certified Talend Developer.

I specialize in data migration, heterogeneous system migration (Oracle, PostgreSQL, SQL Server), and industrializing Data Quality processes.

My recent achievements include: migration of a critical information system with 60 tables and 6 million records (10 years of history) at EDF, and optimization of Data Warehouse feeding processes with an execution time saving of over 90%.

I have worked in critical environments — energy/nuclear (EDF), gas (GRDF), public health, HR — with strong requirements for reliability, traceability, and performance.

Key skills: Talend DI, advanced SQL, modeling, Python, SAP BO, QlikView, Agile.

Available for your data migration, integration, or quality projects.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Lyon (up to 50km)

EDF
Data Engineer - Expert Talend
ENERGY AND UTILITIES
September 2022 - September 2025 (3 years)
Lyon, France
Migration of the WasteApp application (nuclear waste management) from the old IS to the new one, and feeding a Data Warehouse for national storage reporting. Scope: 18 nuclear sites, over 100 users.

Oracle → PostgreSQL data migration on a scope of 60 tables and a volume of 6 million records (migration with a historical depth of 10 years): extraction, transformation, cleaning, normalization
Design and development of Talend SI-DECHETS and INVENTAIRE batches
Optimization of Data Warehouse feeding flows: execution time saving of over 90%
Implementation of source/target consistency and reconciliation controls to ensure migration reliability
Feeding a DWH presented via SAP BO (national radioactive waste inventory)
Deployment, monitoring, ongoing maintenance, and technical support to the team
Writing technical documentation (STB, mappings, business rules)
SAP Business Objects Git Talend SQL Python
GRDF (via ASI) — Énergie
Data Consultant - Talend Specialist
ENERGY AND UTILITIES
June 2020 - August 2022 (2 years and 2 months)
Lyon, France
Development and maintenance of GRDF BI interfaces (30+ flows) and management of the weekly run.

Creation of a Talend batch for monitoring technician rounds (tablet entry → DWH)
Audit, optimization, and reliability improvement of 4 critical pipelines, halving the ticket reopening rate (from 80% to 40%)
Ongoing maintenance and continuous improvement of over 30 Talend flows in production
Requirements gathering, development, testing, deployment, user training
Weekly run: supervision, incident management
Talend Open Studio Oracle SQL CMC Data Modeling
Sully Group
Talend Developer
February 2019 - June 2020 (1 year and 4 months)
Development of several Talend projects for public sector clients and ongoing maintenance of interfaces managed by the Saint-Priest service center.