Freelancer profile translated to English.

Description

I am a Senior Data Consultant with over 10 years of experience in IT and project management. Currently, I am carrying out data migration projects to cloud platforms such as Snowflake, Qlik Sense, or Power BI. I am proficient in Datastage, Talend, Power BI, Cognos, SQL Server, Python, Shell, and Business Objects, and I am capable of designing, developing, testing, and deploying quality solutions tailored to client needs. I am passionate about cutting-edge technologies and innovations in the data sector. I am also a business solutions consultant, having worked for three years at the Ministry of the Interior, where I managed the fleet of intelligent radar cars, involving private companies, the gendarmerie, and the police. I am motivated by challenges, learning opportunities, and value creation. I am seeking stimulating and varied projects where I can contribute my expertise, creativity, and collaboration.

Languages

English
Native or bilingual

Workplace preferences

Can work on-site

Paris (up to 50km)

Agirc-Arrco
Senior Data Consultant
PUBLIC SECTOR
January 2024 - Today (2 years and 7 months)
Paris, France
Freelance mission within the decision-making department of the AGIRC-ARRCO Federation, as part of a Teradata SI migration project to a Cloudera platform, with a new foundation based on Spark and Apache Iceberg.

✅ Main Activities:

Migration of Teradata decision-making processes to Spark SQL + Iceberg on Cloudera CDP
Structuring of ODS / DTW / DTM zones in Iceberg with partitions and history management
Implementation of a generic (parameterized) framework for DELETE + INSERT and MERGE processes
Automatic conversion of Teradata DDLs to Iceberg (types, partitions, PK, auto-increment logic)
Feeding the downstream PostgreSQL layer for BI reporting
Integration of data into reporting tools: Cognos and Power BI
Collaboration with SAS and Datalab teams to ensure multi-consumer compatibility
Resolution of Iceberg conflicts: concurrent validation, insert/upsert, business log management

🛠️ Technical Environment:

Cloudera CDP, Spark 2.4 / 3.x, Hadoop HDFS, Apache Iceberg, Parquet
Teradata, PostgreSQL, IBM DataStage Cloud, SAS (read access), Cognos Analytics, Power BI
Git, Shell, SQL, PySpark, technical ID logic (ROW_NUMBER + MAX)

📌 Results:

Reduction of costs related to Teradata licenses
Deployment of a more flexible, modern, and open decision-making platform
Improvement of pipeline quality and better integration with BI tools (Power BI, Cognos)
Spark Iceberg Teradata Datastage PostgreSQL
Lafargeholcim
BI Solution Consultant
REAL ESTATE
November 2022 - March 2023 (5 months)
Context: Redesign of the IT system for the Commercial and Marketing Department.

Functional Scope:

Ensure a very high level of data quality
Modernize and adapt the information system to increase the efficiency of data analysis and the performance of business activity reports.

Mission:

Migration of the Business Objects BI tool to the new QlikView tool.

Implementation of a Cloud AWS platform for QlikView
Reporting and data modeling in QlikView
Data feeding and extraction with Talend
Shell, Bash scripting
Conducting acceptance testing
Writing specifications
Automatic data feeding
User training and support on QlikView
QlikView Datastage Qlik Sense Talend SAP Business Objects
Clarins
BI Solution Consultant
FASHION AND COSMETICS
March 2023 - January 2024 (10 months)
Paris, France
Context: Redesign of the Clarins group's Information System with 991 DataStage jobs to be adapted one-to-one.

Functional Scope:

Ensure a very high level of data quality
Modernize and adapt the information system to increase the efficiency of data analysis and the performance of activity reports.

Mission:

Migration of DataStage tool from V11.3 to V11.7
Implementation of an Azure Cloud platform
Implementation of data platform convergence on Azure Snowflake: move to Data Lake,
Migration of SQL Server to Snowflake
Migration of DataStage Server jobs to PX
Adaptation of reporting tools Cognos, Power BI, and Qlik Sense to the new Snowflake database.
Data feeding and extraction
Scripting
Conducting acceptance testing
Writing specifications
Automatic data feeding
Datastage Snowflake QlikView Cognos Microsoft Power BI

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Master 2 Professional Management, Business Administration option, Project Management
University of Reims Champagne-Ardenne
2010
Master 2 Professionnel Management option Administration des Entreprises, Management de projet
Master 2 Professional Industrial Informatics and Embedded Systems Control, Computer Engineering
University of Reims Champagne-Ardenne
2009
Master 2 Professionnel Informatique Industrielle et Commande des Systèmes Embarqués, Ingénierie informatique

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Nabill Touijer

Senior Data Consultant

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