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Sami Riahi

@samiriahi

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Data Engineer specializing in cloud data warehouses and ELT/ETL pipelines with Snowflake and AWS.

Belgium

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What I'm looking for

I’m looking for a team where I can design cloud data warehouses end-to-end—ELT/ETL pipelines, CDC, and data quality—using modern tools. I want to keep growing with state-of-the-art techniques and strong collaboration.

I’m a Data Engineer focused on building reliable cloud data platforms that turn raw data into decision-ready analytics. I’ve worked with modern warehouse architectures and automated ingestion pipelines to keep data consistent, auditable, and ready for business stakeholders.

Since June 2023, I’ve implemented a cloud data warehouse using Medallion architecture and Data Vault modeling. I use Matillion for ELT, Snowflake as the cloud database, and AWS services to deploy and orchestrate data workflows.

Previously at O2 Care Services, I built and evolved a cloud data platform with state-of-the-art data techniques. I implemented CDC synchronization with Airbyte, deployed components on AWS (EC2, S3, Lambda, Step Functions, API Gateway), and applied data quality practices using Great Expectations.

Earlier, as a Data Engineer at Inetum, I delivered BI solutions including a data warehouse with dashboards for ERP Sage X3 and multiple management dashboards. I created ETL jobs with Talend, optimized SQL queries, and followed best practices with monitoring, error handling, and recoverable execution through checkpoints.

Experience

Work history, roles, and key accomplishments

Current

Senior Data Engineer - Transdev

Current

Transdev

Jun 2023 - Present (3 years)

Implemented a cloud data warehouse on Snowflake using Medallion and Data Vault modeling, and built ELT/CDC pipelines with Matillion, Airbyte, and AWS services (EC2, Lambda, S3, Step Functions). Automated infrastructure with Terraform and added data quality checks with Great Expectations.

Matillion Snowflake AWS Step Functions SQL Python Data Vault Medallion Architecture Airbyte Great Expectations Terraform

Senior Data Engineer

OuiCare

Jul 2020 - May 2023 (2 years 10 months)

- The implementation of cloud data warehouse
- Using Medallion architecture
- Using Data Vault as data warehouse
- Matillion for the ELT implementation
- Snowflake as cloud database
- Using Airbyte for the CDC synchronisation
- AWS as cloud ( EC2 instances, S3, Lambda, Step Functions, API Gateway...) .
Using Terraform as "infrastructure as code"