Ernest Popovici

Accor · Data Pipelines & Developer Apps · Ongoing

Data team of Accor's procurement subsidiary: a cross-functional squad of data engineers working with business analysts and end users.

• Ingest procurement data from multiple sources and transform it on Snowflake from business analyst specifications, preparing clean datasets for BI and internal data applications.
• Manage all SQL tasks and infrastructure as code with Terraform, and contribute to the team's long-running migration toward dbt and Airflow.
• Build internal data applications, some of them with Streamlit.
• Help set up AI agent tooling for data engineering and development workflows across the technical organization.

Stack: Snowflake, Terraform, dbt, Airflow, Python, Streamlit

Effy · Semantic Layer Migration · 3 months

• Introduced a unified semantic layer with MetricFlow to modernize Effy's analytics stack.
• Migrated existing dbt models, defined semantic models and standardized key business metrics.
• Enabled consistent, self-service analytics across teams.

Stack: dbt, MetricFlow, Airflow, BigQuery

EDF Renewables · Data Lab Integration · 14 months

• Set up a centralized AWS Data Lab as part of the AWS Migration Acceleration Program (MAP), streamlining data access across departments.
• Configured data.all with AWS services and built the initial workflows and pipelines, then managed the full migration to Amorphic, reconfiguring data models and pipelines.
• Produced training materials and ran onboarding sessions for technical and non-technical users.
• Led all English-language communication between EDF Renewables' teams and the London-based development team.

Stack: AWS SageMaker, AWS Athena, AWS S3, AWS Glue, AWS CDK, data.all, Amorphic

Internal · Salesforce ↔ Snowflake Integration · 3 months

• Led the technical development of a bidirectional Salesforce–Snowflake integration: data architecture, ingestion, dbt transformations and re-ingestion into Salesforce.
• Built BI dashboards that improved data accessibility for business users.

Stack: dbt, Snowflake, Salesforce

Datanumia · EDF Group · Data Platform Industrialization · 3 months

• Replaced a legacy pipeline of Python scripts on AWS Glue with a dbt project on Amazon Redshift.
• Redesigned the data architecture, configured the Redshift cluster and owned data transformation and testing.
• Wrote the full project documentation, stored on Amazon S3.

Stack: AWS Lambda, AWS S3, AWS Glue, AWS Redshift, dbt, Python

Internship · Cloud Data Platform · 6 months

• Built and industrialized a cloud-native data platform from open-source tools: Terraform infrastructure, Airbyte ingestion from PostgreSQL to Redshift, dbt transformations and Superset dashboards.
• Secured the platform with AWS Secrets Manager and Keycloak.

Stack: AWS Redshift, dbt, Superset, Terraform, Keycloak, Airflow, Airbyte, Docker