Own performance and growth for a portfolio of high-spend client accounts across Meta, Google, TikTok, and other platforms. Analyze full-funnel metrics, identify bottlenecks, develop and test optimization hypotheses, improve ROAS and conversion KPIs, and scale profitable campaigns. Lead a cross-functional cell of media buyers, creative producers, copywriters, and video editors while serving as the primary client contact and driving campaign, creative, audience, and funnel expansion.