(Senior) Data Modelling Engineer (m/f/d)

This Senior Data Engineer role designs, builds, and operates the data platform that powers Simulmedia's TV advertising products. The engineer will build batch data pipelines ingesting multi-billion-row datasets, model complex dimensional data, and migrate workloads from Redshift to a Databricks/Spark/Delta lakehouse. This role requires 7+ years of experience with Python, SQL, and large-scale data pipelines, orchestrating with Airflow, and ensuring data correctness through reconciliation and backfills.

This senior data engineering role builds and maintains data pipelines and infrastructure for GroupM's analytics platforms. The engineer will design ETL processes, optimize data storage, and ensure data quality and accessibility for downstream analytics and reporting.

This role designs, develops, and maintains scalable ELT/ETL pipelines using modern cloud technologies, primarily on Google Cloud Platform. The engineer will build data ingestion frameworks, optimize BigQuery performance, and develop reusable data transformation frameworks using dbt. They will also implement data quality and governance processes, support analytics enablement, and collaborate with media, analytics, and technology teams.