Freelancer profile translated to English.
Back to original languageAbout Nicolas
Data Engineering as Business Value.
For me, the solution to business problems takes precedence over the technical stack. With 6 years of experience, my profile combines the rigor of banking environments (3 years of Big Data and its reliability requirements) with the efficiency of modern stacks.
I recently carried out a strategic update on the Cloud ecosystem (Databricks, Snowflake, DBT, Airflow) to offer, as a Freelancer, concrete solutions combining business value and best practices (WAP, Delta-Lake, CI/CD).
Technically versatile, I design data pipelines in Python, Scala, and Java, while ensuring orchestration via Python DAGs.
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 50km)
Experience
- Crédit Agricole Technologies et ServicesCDI - Data EngineerBANKING AND INSURANCEOctober 2022 - May 2025 (2 years and 7 months)Paris, FranceWithin the Data Chapter, internal service to business teams for:- Optimization: Rewriting Python/Spark jobs for the CDP infrastructure managing Marketing data tracking. Accomplishment example: reducing pipeline execution time from 8h to 6h (-25%) through denormalization.- Data Warehousing: Creation of ingestion pipelines (~100 GB/day) and structuring of Hive tables.- Architecture & Migration: Contribution to the refactoring of marketing tracking to support 2 TB/day.- Listening and business value: Taking Data needs and simplifying work for various non-technical stakeholders.- Production & Rigor: Execution of complex production copy procedures (including a part of Semarchy and in-house tools) in a banking environment.- Observability: Implementation of monitoring dashboards (ELK/Grafana).
- Crédit Agricole Technologies et ServicesInternship - Data Developer - Digital Sobriety TopicsBANKING AND INSURANCEOctober 2021 - October 2022 (1 year)Paris, FranceWithin a small team of the WFI (Workplace Innovation Factory) dedicated to creating innovative solutions for the Crédit Agricole group, I worked on a pioneering topic of Digital Sobriety, before its current media coverage.My missions:- Analysis of application logs with ELK, in conjunction with essential web indicators of the company's tools, and evaluation of their environmental impact.- Development and testing of ETL pipelines in Rust, creation of APIs and web interfaces with a Rust back-end server, allowing measurement and visualization of infrastructure consumption by tool within the group.
- Phoenix Fleet ExpertInternship - .Net Software DeveloperAUTOMOBILENovember 2020 - September 2021 (10 months).NET Software Developer internship and advanced use of C# and the .NET stack to apply modifications to an advanced fleet management tool.Phoenix Fleet Expert, formerly Phoenix Développement, is the French leader in automotive fleet management, offering its clients a tool that perfectly understands the needs of fleet managers.
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Education
- Master 2 (M2), Data & Application DesignÉstiam • School of Information Technology Applied to Business2022Master 2 (M2), Data & Application Design
- Professional Bachelor's Degree, Computer EngineeringNational Conservatory of Arts and Crafts2020Licence professionnelle , Ingénierie informatique
Certifications
- AWS Certified Solutions Architect – AssociateAWS2025