Freelancer profile translated to English.

Description

Versatile Tech Lead & Data Engineer. Expert in developing modern data solutions (Snowflake, Kafka, DBT, Terraform) and multi-language (SQL, Python, ABAP). Specialist in solving complex technical problems and migrating legacy systems.

🎯 My expertise:

- Real-time streaming architecture (Kafka → Snowflake)

- Legacy system migrations (SAP HR, DataStage → XDI)

- Data modeling and ELT/ETL development

- Infrastructure as Code (Terraform) and CI/CD

💼 Recent achievements:

- Design of a complete Kafka → Snowflake architecture with custom connector and Terraform automation

- SAP HR to Snowflake migration with ABAP development and SNC security

- Refactoring of legacy DataStage ETL flows to a modern ELT architecture (XDI)

📍 Immediately available.

Languages

French
Native or bilingual
English
Conversational
Spanish
Conversational
Arabic
Native or bilingual

Workplace preferences

Can work on-site

Bruxelles (up to 50km), Lille (up to 50km), Luxembourg (up to 50km), Liège (up to 50km), Anvers (up to 50km)

BOULANGER
Tech Lead ELT & Data Engineer
December 2023 - Today (2 years and 8 months)
Lesquin, France
Within the decision-making team of Boulanger, I participate in a multi-brand Data transformation project (Boulanger, Electro Dépôt, Krefel, Hifi). My responsibilities include:
Technical quality leadership: code reviews, development validation and deployment. Definition of best practices.
Design and development of batch and real-time ELT flows (Semarchy). Kafka → Snowflake streaming architecture: custom YML connector design, Blob Storage ingestion, Terraform automation (IaC).
DataStage → XDI Migration: refactoring legacy ETL flows to a modern ELT architecture.
SAP HR → Snowflake Migration: ABAP development, SNC connection security, complete ELT chain design.
Data Modeling: complete design of structures (tables, columns, naming) validated by architecture.
Data Engineering: DBT models, Snowflake views/tasks, Neo4J data lineage.
Development: Streamlit application, MS Sustainability Manager integrations.
Data Sharing Snowflake, Python/Apps Script scripting.
Administration:
Unix/Linux, ELT platform management (version upgrades).

Stack: Snowflake, DBT, Kafka, Terraform, Semarchy, XDI, Neo4J, Streamlit, SQL, Python, ABAP, Google Apps Script, Microsoft Azure, Unix/Linux
Snowflake ETL/ELT Kafka Connect Tech Lead Python
SAINT MACLOU
Data Engineer
RETAIL (SMALL BUSINESS)
May 2021 - October 2023 (2 years and 5 months)
Wattrelos, France
Within the Data team at Saint Maclou, I participated in the data platform re-architecture project. I was responsible for the design and development of the following products:
Design and development of data integration flows in batch mode with Stambia (MSSQL Server / MongoDB).
Design and development of real-time data integration processes (ActiveMQ / Stambia WebService).
Analysis and optimization of data integration flows (Stambia).
Design and development of APIs on the Node.js Framework.
Migration of existing runtimes: upgrading runtime versions from S19 to S20 (analysis of existing, recommendations, testing, migration…).
Standardization of Stambia designers from version S19 to S20.
Design and development of automated deployment pipelines on GitLab (CI/CD).
Monitoring the implementation of deployment frameworks.
Centralization and management of RUN (production plan incidents).
Implementation of good development practices.
Creation and automation of Google Sheets Scripts (Google App Script).

Stack: Stambia, Stambia Analytics, MongoDB, MS SQL Server, Gitlab, ActiveMQ, Google Cloud Platform (App Engine, Cloud Storage, Big Query, Kubernetes), Node JS, Google App Script
MongoDB Node.js Google Apps Script Semarchy xDI API
Camaieu
Intern Data Scientist
March 2020 - August 2020 (5 months)
59100 Roubaix, France
As part of a Data consultant mission, I participated in a Machine Learning implementation project within the Data team. I was responsible for:
- Implementing a data scraping model in Python.
- Designing a library of labeled images.

Tools / Environments: Scrapy, Python, Jupyter