Own campaign implementation and management from setup through to optimization and reporting. Build and maintain audience segments according to advertiser targeting requirements and campaign objectives. Set up and schedule campaigns, ensuring all specifications, creative formats, and targeting logic are correctly configured. Monitor live campaigns, tracking delivery, pacing, and key performance indicators (KPIs) while proactively optimizing results. Collaborate with data analysts to prepare performance reports, extract insights, and tell compelling stories from campaign data. Serve as the main advertiser contact post-contract, managing creative assets, timelines, and communications throughout the campaign lifecycle. Provide proactive communication and recommendations to drive advertiser satisfaction and renewals. Contribute to process improvements, helping to establish best practices for campaign setup, QA, and performance optimization.