Freelancer profile translated to English.
Back to original languageAbout Nicolas
Senior Data Engineer with 10 years of experience in designing and implementing robust and scalable data systems.
I work across the entire value chain: architecture, pipeline development, modeling, and performance optimization, in both startup and more structured environments.
Key experiences:
- Complete redesign of an IoT data platform at Fractal Energy (AWS, MQTT, TimescaleDB)
- Scaling backend and data systems at Probayes (PostgreSQL, microservices, CI/CD)
- Design of distributed pipelines and team management at Realytics
Main stack: Python, SQL, Spark, AWS/Azure, distributed systems.
I am particularly interested in scalability, reliability, and production deployment challenges.
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 50km)
Experience
- SCORLead Data Engineer P&CBANKING AND INSURANCESeptember 2025 - March 2026 (6 months)Paris, France- At the French leader in reinsurance, managed 8 engineers in an English-speaking environment and deployed a centralized data platform on Palantir Foundry (migration from Databricks)- Developed scalable data pipelines improving access, reliability, and usage of data by business teams
- Fractal EnergyData Platform EngineerENERGY AND UTILITIESMay 2024 - September 2025 (1 year and 4 months)Paris, France- Audited and then completely redesigned the data infrastructure of an IoT startup, including the design and implementation of a platform from scratch (MQTT, AWS, TimescaleDB)- Scaled through load testing and delivered a robust, maintainable, and documented solution aligned with business needs
- ProbayesSenior Data EngineerTECHAugust 2022 - March 2024 (1 year and 7 months)Paris, France- Optimized a relational model for scaling with PostgreSQL- Broke down the Python backend into a microservices architecture- Established backend development standards (code quality, CI/CD, best practices) aligned with industry requirements- Introduced unit and integration tests ensuring the reliability and maintainability of services
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Education
- Master in Computer Science, Computer EngineeringBordeaux National Higher School of Electronics, Computer Science and Telecommunications2016Master en informatique, spécialité génie logiciel et Big Data.
- Mathematics and Theoretical Physics.Lycée Saint-Louis2013Mathématiques et physique théorique.