Marketing Data Engineer - Ad Tech (US hours)

Our client in the US is looking for a Marketing Data Engineer to own the data pipelines and data-quality foundation that power their dashboards, pacing outputs and recurring reporting. Core responsibilities - Build and maintain API/ETL ingestion from DSPs, ad servers and other advertising platforms. - Normalize campaign data and maintain metric definitions used across dashboards and reporting. - Manage cloud-warehouse structures and client data deliveries where required. - Reconcile pipeline output against raw platform exports and investigate material variance. - Build automated data-quality checks, alerting and monitoring for pipeline/dashboard health. - Manage service-account/API credential workflows in the clients owned environments. - Support platform migrations and rebuild data integrations without reporting discontinuity. - Partner with Dashboard Developer and Programmatic Lead on definitions, mapping and release validation. Requirements Must-have profile - 4+ years in data engineering/analytics engineering with production ETL/API responsibility. - Strong SQL plus at least one production programming/scripting language such as Python. - Experience with cloud data warehouses such as BigQuery, Snowflake or equivalent. - Experience reconciling data across multiple source systems and designing data-quality controls. - Ability to own production pipelines, troubleshoot failures and document data definitions clearly. Preferred experience - Direct experience with advertising/marketing platform APIs and campaign data. - Experience with DV360 or other DSP data models, ad-server data or marketing attribution feeds. - Experience with scheduled reporting/alerting and secure client data delivery. What success looks like - Reporting data is reliable and reconciles within agreed tolerance. - Pipeline failures or data lag are detected before clients notice. - Platform changes do not create reporting gaps. - Metric definitions remain consistent across dashboards and recurring reports.