You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
El Mehdi AttyEM

El Mehdi Atty

Data Engineer | Snowflake | DBT | AWS | AIRFLOW

€500/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
Back to original language

About El Mehdi

DATA ENGINEER | SNOWFLAKE, DBT, AWS, AIRFLOW, TABLEAU
Are your data scattered, unreliable, or difficult to leverage? I help companies build robust and scalable pipelines with expertise in DATA ENGINEERING, SNOWFLAKE, DBT, AWS, AIRFLOW, and TABLEAU.

I am a DATA ENGINEER, specializing in the design and industrialization of modern data platforms. I work across the entire value chain: ingestion, transformation, storage, and delivery. My core expertise lies in SNOWFLAKE for data warehousing, DBT for transformation and modeling, AIRFLOW for orchestration, and AWS for cloud infrastructure. I also design TABLEAU dashboards to make data usable for business teams.

I have worked on end-to-end data pipelines, from multiple sources to centralized data warehouses on SNOWFLAKE. Implemented reliable transformations with DBT, automated workflows with AIRFLOW, and deployed on AWS to ensure scalability and robustness. I have also supported teams in creating decision-oriented TABLEAU dashboards with consistent and traceable KPIs.

Each project results in a complete, documented, and maintainable data platform. You get an architecture based on SNOWFLAKE, transformations tested with DBT, automated workflows via AIRFLOW, and optimized AWS infrastructure. The data is structured to effectively feed TABLEAU with reliable and actionable indicators.

Modern data stack around SNOWFLAKE, DBT, AIRFLOW, AWS, and TABLEAU. Versioned modeling, data testing, pipeline automation, and deployment industrialization. Strong focus on quality, scalability, and documentation.

If you are looking for a DATA ENGINEER to structure or make your SNOWFLAKE, DBT, AWS, AIRFLOW, TABLEAU stack reliable, contact me to discuss. Quick scoping call and response within 24 hours.
  • French

    Native or bilingual

  • English

    Native or bilingual

Can work on-site
Paris (up to 50km), Bordeaux (up to 50km), Lille (up to 50km), Toulouse (up to 50km), Lyon (up to 50km)

Experience

  • NORAUTO
    DATA ENGINEER SNOWFLAKE/DBT
    RETAIL (LARGE RETAILERS)
    September 2025 - March 2026 (6 months)
    Lille, France
    Mission Objective:
    Design and industrialize an international cloud data platform for Norauto, aiming to centralize business data, ensure reliable analysis, and accelerate performance monitoring through a modern architecture on AWS.

    Achievements:
    Implemented robust and fully automated ETL/ELT pipelines with Airflow on AWS, orchestrating the ingestion of multiple sources (ERP, retail, e-commerce) into Snowflake, improving data reliability, international scalability, and reducing data availability times for business and data teams.
    Designed, structured, and optimized an enterprise data warehouse on Snowflake with advanced modeling and transformations using dbt, including automated tests, centralized documentation, and model versioning, strengthening data governance, KPI quality, and analysis standardization across the group.
    Developed strategic analytical dashboards on Tableau connected to Snowflake, enabling the monitoring of retail performance (sales, margin, stock, supply chain, store traffic), improving operational visibility, and accelerating decision-making through optimized datasets and industrialized Airflow/dbt pipelines on AWS.
    Implemented Data Engineering best practices (Airflow job monitoring, Snowflake cost and performance optimization, dbt workflow industrialization) to reduce incidents, improve processing reliability, and ensure service continuity in critical environments.
    Contributed to the standardization of data models and naming conventions in dbt, facilitating collaboration between data and business teams, improving dataset readability, and reducing data understanding time for end-users.

    → Technical Stack:
    Snowflake, dbt, AWS, Airflow, Tableau
    Snowflake DBT Microsoft Azure Agile methodology ETL
  • Betclic Group
    Data engineer
    ENTERTAINMENT AND LEISURE
    October 2023 - August 2025 (1 year and 10 months)
    Bordeaux, France
    Mission Objective:
    Design and optimize a data & AI-driven platform for Betclic Group, aiming to industrialize analytical flows, enhance data model performance, and integrate Agentic AI use cases in a scalable AWS cloud environment.

    Achievements:
    Implemented batch and near real-time data pipelines with Airflow on AWS, orchestrating multi-source ingestion (product, gaming, marketing, CRM) into Snowflake, improving data freshness, processing reliability, and dataset availability for data and product teams.
    Designed, structured, and optimized an enterprise data warehouse on Snowflake with advanced modeling via dbt, including automated tests, data lineage, centralized documentation, and standardization of analytical models, strengthening the quality, governance, and scalability of KPIs.
    Developed and industrialized analytical dashboards on Tableau for monitoring business performance (revenue, player engagement, conversion, retention), improving real-time visibility and accelerating decision-making through optimized datasets and dbt/Airflow workflows on AWS and Snowflake.
    Implemented advanced Data Engineering practices (Airflow monitoring, Snowflake cost and performance optimization, query tuning, workload management) to reduce incidents, improve pipeline stability, and ensure large-scale performance.
    Integrated Agentic AI use cases to automate certain exploratory analyses and assist in insight generation, increasing data team productivity and facilitating the identification of business trends.

    → Technical Stack:
    Snowflake, dbt, AWS, Airflow, Tableau, Langgraph
    Python Amazon Web Services Snowflake DBT ETL

Recommendations

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • MSC Artificial Intelligence and Big Data
    Epitech
    2023
    Je réalise et développe différents projets en data science et développement full-stack, couvrant plusieurs domaines complémentaires. Côté machine learning, j’ai travaillé sur l’analyse de séries temporelles appliquées aux marchés financiers, notamment l’étude des tendances et comportements du marché boursier américain. Ces projets m’ont permis de manipuler des modèles de prévision, d’exploration de données financières et d’extraction de signaux pertinents. En computer vision, j’ai exploré des cas d’usage liés à la détection et à l’analyse d’images, en mettant en œuvre des modèles de deep learning pour résoudre des problématiques concrètes de classification et de reconnaissance. Enfin, sur la partie développement web, j’ai conçu plusieurs applications complètes, notamment une application de time management permettant l’organisation et le suivi des tâches, ainsi qu’une plateforme liée aux cryptomonnaies intégrant des fonctionnalités de suivi et de visualisation de données en temps réel.
  • Bachelor's degree in Mathematical Engineering
    university of bordeaux
    2021
    J’ai acquis une solide base en programmation avancée en Python et C++, me permettant de concevoir des solutions performantes et adaptées à des problématiques complexes, aussi bien en data engineering qu’en data science. Je travaille régulièrement sur le traitement d’images, en explorant des techniques de vision par ordinateur et de deep learning pour l’analyse et l’extraction d’informations à partir de données visuelles. Mes compétences incluent également l’analyse de données et l’optimisation, avec une approche orientée performance, qualité des résultats et amélioration continue des traitements. Sur le plan théorique, je m’appuie sur des bases solides en algèbre linéaire et en modélisation informatique en Python, qui me permettent de comprendre, construire et optimiser des modèles algorithmiques efficaces.

Certifications

Skill set

Categories