Global Media Effectiveness Lead — Hybrid, London

COS is seeking a Global Media Effectiveness Manager to lead measurement and optimisation of our global paid media. You will focus on data-driven insights to inform global planning, evaluating MMM and experimentation across markets.

You will collaborate with Data & Analytics and media agencies, translating complex outputs into actionable leadership narratives. The role is primarily office-based in London with three days in the office and two remote days.

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