STSarah Thiebault
@sarahthiebault
Freelance Data Engineer specializing in ETL, Snowflake, dbt and analytics automation.
FranceWhat I'm looking for
I am a freelance Data Engineer with strong expertise in building end-to-end ETL and Reverse ETL pipelines, optimizing Snowflake models, and automating analytics workflows using dbt, Airbyte, Airflow and Supabase. I collaborate closely with business teams to deliver trusted, analysis-ready datasets and cost-efficient data platforms.
My background includes designing and deploying full Snowflake analytics stacks, integrating multiple SaaS sources, and implementing data quality checks, monitoring and CI/CD for reliable operations. I have delivered measurable operational impact, including efficiency gains and revenue-related improvements through data enablement and automation.
I also design and deliver training and enablement programs—running product data bootcamps, 1:1 sessions, and e-learning content to help teams adopt data-driven practices and maintain high data reliability.
Experience
Work history, roles, and key accomplishments
Freelance Data Engineer
Self Employed
Sep 2024 - Present (1 year 5 months)
Deliver end-to-end ETL and Reverse ETL pipelines, optimize Snowflake models for performance and cost, and automate data enrichment workflows using dbt, Airbyte and Airflow for startups and scale-ups. Collaborate with business teams to produce trusted, analysis-ready datasets and CI/CD-driven data operations.
Data Engineer / Analytics Engineer
Pennylane
Jan 2022 - Sep 2023 (1 year 8 months)
Built and maintained 40+ dbt models transforming raw sources into analytics-ready marts, integrated multiple SaaS sources into Snowflake, and orchestrated Airflow workflows with monitoring and data quality checks to support reporting and finance teams.
Lead Data Engineer
Air Liquide
Dec 2019 - Jun 2021 (1 year 6 months)
Designed and deployed a full Snowflake analytics stack with dbt and Airflow for supply chain analytics, defined KPI frameworks and monitoring models that generated €100,000 in efficiency gains, and created global training materials to enable operational teams.
Education
Degrees, certifications, and relevant coursework
UPUniversity of Paris-Saclay
Master in Data Science, Data Science
2018 - 2019
Master in Data Science focused on ETL and analytics engineering, building dbt models and integrating SaaS sources into Snowflake for reporting.
ISIMT Lille Douai (IMT Engineering School)
Engineering Degree, Computer Science
2015 - 2019
Engineering degree in Computer Science with emphasis on data enablement, training delivery, and establishing data reliability practices.
Tech stack
Software and tools used professionally
Availability
Location
FranceAuthorized to work in
Job categories
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