Freelancer profile translated to English.
Back to original languageAbout Mathieu
Senior Data Engineer / Data Architect specialized in data integration, structuring, and validation in complex IT environments.
I work across the entire data conversion chain on Data Engineering projects, including:
- Ingestion via ETL / ELT, or in streaming / real-time,
- Storage in Data Warehouses, Data Lakes
- Reporting in BI and monitoring contexts
Context of Intervention:
- Dispersed data (Excel, files, APIs, legacy systems)
- Unreliable or difficult-to-maintain data pipelines
- Need to structure a Data Warehouse or Data Lake
My interventions allow for:
- Developing and validating data pipelines (Talend, Python, dbt, Airflow)
- Structuring and centralizing data (PostgreSQL, Snowflake, Redshift, Bigquery)
- Implementing Data Warehouse / Data Lake architectures (Apache Spark / Iceberg)
- Managing real-time and streaming issues (Apache Kafka, Flink, Debezium, and other CDC)
- Improving data quality and BI usage (Power BI, Qlik)
Approach:
- Quick understanding of business challenges
- Design of pragmatic architectures
- Operational implementation (not just consulting)
- Team support
- ...and above all, DEV, DEV, DEV...!
My "core" skills:
- Data Engineer
- Data Architecture
- Data Integration
- ETL
- ELT
- Data Pipeline
- Data Warehouse
- Data Lake
- SQL
- Python
Technical Stack:
- Languages: Python, SQL, Java, Rust
- ETL / ELT: Talend, dbt
- Orchestration: Airflow
- Databases: PostgreSQL, MySQL, SQL Server, Oracle
- Data Warehouse: Snowflake, BigQuery, Redshift
- Big Data: Spark, Iceberg, Hadoop
- Streaming: Kafka, Flink, Debezium
- BI: Power BI, Qlik
Intervention possible from upstream (audit / scoping) to production.
Availability:
Available 7 days a week via Malt messaging
Response within an hour
French
Native or bilingual
Spanish
Native or bilingual
English
Fluent
German
Conversational
Chinese
Conversational
Can work on-site
Toulouse (up to 50km), Montauban (up to 50km), Albi (up to 50km), Castres-sur-l'Agout (up to 50km)
Experience
- Campus YNOVInstructorEDUCATION AND E-LEARNINGJanuary 2026 - Today (7 months)Toulouse, FranceInstructor for YNOV school, I teach a 60-hour module on application architecture, including:- Courses on modeling and UML- Practical sessions on application development- Practical sessions on inter-application exchanges- Practical sessions on Enterprise Service Buses, API Gateways- Practical sessions on BI- Real-time practical sessions
- Satel (Assist Digital Group)Data ArchitectCONSULTING AND AUDITSSeptember 2025 - March 2026 (6 months)Toulouse, FranceData warehouse creation:- Proposed architecture for a data warehouse using PostgreSQL and S3 MinIO- Development of ingestion pipelines in Python- Development of ELT scripts with DBT and Airflow- Creation of the first BI dashboards with PowerBI- Deployment and maintenance- Training of an offshore team in Morocco for ongoing maintenance
- 5A SolutionsSenior Data EngineerAVIATION AND AEROSPACEApril 2025 - August 2025 (4 months)Toulouse, FranceAs part of mapping Airbus's IT vulnerabilities:
- Ongoing maintenance of existing Python ETLs
- Implementation of elements for a Neo4J Graph database
- Creation of new ingestion pipelines to an Iceberg data lake
- Optimization of existing scripts and search for operational performance
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Education
- Engineering Degree, Information SystemsESME-Sudria | Ecole Spéciale de Mécanique et d'Electricité2006Diplôme d'ingénieur, Systèmes d'Information
- Data Scientist, Data SciencesDataScientest.com2021Data Scientist, Data sciences
Certifications
- Data ScientistDatascientest - Université Paris 1 Panthéon - Sorbonne (RNCP Level 7 title)2021
- [PCAP-31-03] PCAP – Certified Associate in Python Programminghttps://pythoninstitute.org/2020