Freelancer profile translated to English.
Back to original languageAbout Hadrien
I consider data to be the memory of the business. Making it easily and globally accessible to all organizational stakeholders provides a significant leverage effect so that everyone can carry out the company's vision. Thus, the analytical platform should not be limited to KPI tracking but must integrate, communicate, and adapt to the rest of the platform.
I thrive in close collaboration with multidisciplinary teams, gathering their data needs and responding to them as effectively as possible while respecting best practices. I pay particular attention to data quality, governance, and the sustainability of underlying logic and systems.
French
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- DINUMData EngineerPUBLIC SECTORNovember 2024 - Today (1 year and 9 months)Paris, FranceImprovement and maintenance of the data backend and the Company Directory API.Maintenance of datagouv Airflow pipelines.
- Lingoda GmbhData EngineerEDUCATION AND E-LEARNINGFebruary 2024 - September 2024 (6 months)Documentation then migration of financial and accounting pipelines manually maintained on Google Sheets to an automated process with AWS Redshift and Airflow. Then creation of Tableau reports to monitor results.
- Instapro GroupData EngineerCIVIL ENGINEERINGApril 2023 - December 2023 (8 months)Aix-en-Provence, FranceImprovement of the data platform configuration and refactoring of the data team's codebase for 3x faster pipelines while processing 2x more data.Over the years, the code for transforming raw data into business data ready for analysis has become increasingly complex. The total refactoring of the codebase, working closely with the corresponding product teams, has massively increased the performance of data pipelines while making the logic more understandable and relevant:- Identify and remove obsolete code snippets- Merge duplicate logic or logic related to the same domains from different places- Streamline CI/CD processes- Update business domains and terminology used in the codebase to align with the business- Optimize queries to speed up backfills and incremental logic- Improve data governance- Better monitoring and addition of numerous data quality tests- Use the latest available features and apply the latest best practices
Reviews
Xavier
L'Annuaire des Entreprises
Reviewed on 11/21/2025
I worked with Hadrien on ETL & data engineering topics. He is able to quickly grasp data and its business nuances, analyze it, and make the right decisions. He implemented complete data pipelines (Airflow + indexing in Elasticsearch) and in parallel, he developed and maintained a REST API using FastAPI to expose the data. He is an excellent profile combining data expertise with generalist Python development skills.
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Education
- Master's Degree (Master 2) in Statistical and Economic Engineering for Finance, Insurance, and RiskUniversité Paris Nanterre2015Maîtrise (Master 2) Ingénierie Statistique et Economique de la Finance, de l'Assurance et du Risque