About

Senior Data Engineer and freelance consultant with 8+ years of experience building and migrating large-scale data pipelines for major French enterprises. As the founder of Avenia Consulting, I help companies modernize their data infrastructure — from legacy systems to cloud-native architectures on GCP.

I specialize in cloud migration (Teradata/Oracle to BigQuery), ETL pipeline engineering, and data warehouse architecture. I've led critical data projects at Carrefour (CAC 40), Bouygues Telecom, and Casino Group — handling everything from 16 TB/day log migrations to real-time pricing pipelines that serve thousands of stores.

Master's degree in Computer Science from Université Jean Monnet. Based in Paris, France, I work with enterprise teams across Europe on their most complex data challenges.

Services

01

Data Pipeline Engineering

I design and deploy end-to-end data pipelines using Kafka, Pub/Sub, Airflow, and IBM MQ. From ingestion to transformation and delivery, I build systems that handle millions of events per day with built-in monitoring, error handling, and automated recovery. Whether it's real-time streaming or scheduled batch processing, I deliver production-grade pipelines that scale with your business.

02

Cloud Migration

I migrate legacy data systems — Teradata, Oracle, on-premise warehouses — to GCP and BigQuery. My approach covers the full migration lifecycle: assessment, schema mapping, data validation, parallel running, and cutover. At Bouygues Telecom, I led the migration of 16 TB/day of web application logs. I ensure zero data loss, minimal downtime, and measurable cost savings post-migration.

03

Data Warehouse & Analytics

I architect and optimize Data Warehouses, Data Lakes, and DataMarts on BigQuery and GCP. This includes data modeling, partitioning and clustering strategies, query optimization, and cost management. I also build KPI dashboards with Looker to give stakeholders real-time visibility into business metrics — from pricing analytics to operational monitoring.

04

Technical Consulting

I provide strategic guidance on data architecture decisions, ETL process optimization, and team upskilling. This includes code reviews, best practices workshops, and hands-on mentoring for junior and mid-level data engineers. I help enterprise teams establish standards for data quality, testing, documentation, and CI/CD for data pipelines.

Experience

Carrefour France

2023 - Present
retail

Designed and deployed a complete pricing data pipeline — from calculated prices in BigQuery to point-of-sale systems across thousands of stores. Migrated legacy Oracle batch processes to BigQuery, reducing processing time from hours to minutes. Built real-time KPI dashboards in Looker for price monitoring, enabling merchandising teams to track pricing changes and anomalies as they happen. Orchestrated workflows with Airflow and integrated streaming via Kafka and Pub/Sub.

Oracle to BigQuery migration — processing time reduced by 80%GCPBigQueryPub/SubKafkaAirflowPython

Bouygues Telecom

2022 - 2023
telecom

Led the migration of web application logs (~16 TB/day) from Teradata to BigQuery — one of the largest data migration projects at Bouygues Telecom. Designed the target architecture on GCP, implemented automated data quality controls comparing source and destination datasets, and optimized ETL processes in collaboration with DevOps and Data Engineering teams. Delivered the migration on schedule with zero data loss and a 40% reduction in infrastructure costs.

16 TB/day migrated — 40% cost reductionGCPBigQueryTeradataAirflowLookerPython

Casino Group

2018 - 2022
retail

Owned the core data platform for 4 years, developing and maintaining ETL workflows with Informatica and Teradata at scale. Created and optimized datamarts for pricing strategy analytics used by category managers. Supervised production processes, managed database performance tuning, and established monitoring and alerting for critical data pipelines. Mentored junior engineers and established team coding standards.

4 years of platform ownership — team standards establishedGCPBigQueryTeradataInformaticaPython

Tech Stack

My core expertise spans the Google Cloud Platform ecosystem, with deep hands-on experience in BigQuery, Airflow, and Kafka for building production-grade data pipelines at enterprise scale.

Cloud
GCPBigQueryPub/SubComposerAirflowLookerAWS
Databases
OracleTeradataMongoDBFirebaseHive
ETL & Streaming
KafkaIBM MQInformaticaDBTPySpark
Languages
PythonSQLNode.jsShell/Bash
DevOps & Tools
GitCI/CDLinuxDockerJira

Startups

Certifications

Let's Work Together

Need a Senior Data Engineer? Let's talk.