A leading music streaming company seeks a Martech Engineer to strengthen its marketing technology foundation and make marketing data, audience activation, and campaign delivery more reliable, measurable, and scalable. This role builds, operates, and improves data pipelines, Airflow workflows, APIs, services, and Martech integrations across GCP and marketing platforms. It also operates the data flows behind ActionIQ audience attributes, audiences, composite audiences, journeys, holdouts, suppressions, and activation workflows. The engineer supports audience creation, segmentation, exports, suppressions, personalization, and campaign activation, and validates end-to-end testing and audience flows across email, push, in-app messaging, owned media, and paid media. The role monitors production workflows and campaign dependencies, troubleshoots incidents, investigates data discrepancies, documents root causes and corrective actions, and improves data quality, observability, documentation, testing, governance, and operational resilience. The engineer partners with Marketing Operations, Analytics, Product, Engineering, Data Science, Privacy, vendors, and other teams on launches, migrations, experimentation, and modernization.