Freelancer profile translated to English.
Back to original languageAbout Nicolas
Full-Stack Data Engineerwith 16 years of experience, capable of intervening across the entire Data value chain: from Data Warehouse modeling (classic BI) to the industrialization ofData Lakehouses(Apache Hudi) onAWS**. Specializing in high-performance pipeline development in **Scala/Python/Sparkand the implementation of Cloud infrastructures (AWS) through automation. My goal is to ensure data quality and performance for business steering.
English
Fluent
French
Native or bilingual
Can work on-site
Montreuil (up to 50km), Paris (up to 50km)
Experience
- Aviv Groupe SeLogerData EngineerREAL ESTATEJanuary 2020 - Today (6 years and 5 months)Paris, FranceData Lakehouse & Cloud Architecture (IaC):
- Strategic migration of the on-premise BI ecosystem (MS SQL Server/SSIS) to AWS Cloud (RDS, S3, Lambda), improving service efficiency and scalability.
- Design and automation of Cloud Data infrastructure (Glue, EMR, S3) using Infrastructure as Code (IaC) with Terraform.
- Data Mesh/Cloud Data Warehouse Project: Participation in the initial deployment (2 months of experience) of the new Data Platform using Snowflake and the dbt (Data Build Tool) methodology for industrializing transformations and data quality tests.
- Management and administration of Data Lake tables in Apache Iceberg format for critical data and Apache Hudi format for data requiring rapid updates (Upserts).
Big Data Development (Spark) & Industrialization :- Design and industrialization of robust ETL/ELT pipelines in Scala/Spark and Python (on AWS EMR/Glue) to integrate and process complex multi-source data (Salesforce API, BigQuery, MongoDB) into Snowflake and the S3 Data Lake.
- Modeling of aggregated datasets and calculation of strategic KPIs for Finance.
Monitoring, Quality & Senior Methodology :- Implementation of service Observability and Monitoring using Datadog dashboards and metrics to monitor performance and data flow SLAs.
- Daily work in Agile methods (Scrum/Kanban) and project management via Jira.
- International collaboration (Germany, Belgium) with daily technical communication in English.
- Analytical support (Jupyterlab Notebooks) and maintenance of Tableau dashboards.
Main Stack : Spark, Scala, Python, Snowflake, AWS (Terraform, Glue, EMR, S3, Step Functions), dbt, Apache Hudi, Apache Iceberg, Airflow, Datadog, Tableau. - AutodistributionBI ConsultantAUTOMOBILEJanuary 2010 - February 2014 (4 years and 1 month)Chilly-Mazarin, France• Datamart & cube modeling• Design of feeding procedures• Development of feeding procedures (Ebook project: sales stats, product/customer files on tablets for sales representatives)• Creation of business views• Creation / Evolution of Report Studio reports (Logistics: service rate, turnover rate, depreciation; Daily/monthly sales stats)• Optimization• Writing functional documentation• Writing technical documentation• Writing the Operations Manual• Writing the User Manual
- EfidisBI ConsultantREAL ESTATEApril 2012 - May 2015 (3 years and 1 month)Paris, France• Migration of existing SAP/BusinessObjects XI R2 to SAP/BusinessObjects 4.1• Design of feeding processes• Development of feeding procedures• Creation of business views (universes)• Creation of new reports (Quality: management of requests and interventions, FOST: safety and security monitoring files)• Evolution of existing reports (Student Housing)• Writing functional documentation• Writing technical documentation• Support for deliverable acceptance testing
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Education
- Master 2 MIAGEESIAG - University Paris XII2009Ingénierie des Systèmes d’Information et d’Aide à la Décision
- BTS Management Information SystemsSt Gabriel High School2006
Certifications
- DAT207x: Analyzing and Visualizing Data with Power BIedX2019