Global Media Effectiveness Manager

Company Description COS offers a wardrobe of ready-to-wear and accessories rooted in exceptional quality and lasting design. The brand has an elevated aesthetic that embodies luxury with an emphasis on craftsmanship, innovation and compelling fashion movements.

Job Description As the Global Media Effectiveness Manager at COS, you will play a key role in contributing to the strategic measurement and optimisation of our global full-funnel paid media strategy. With a strong focus on data and insights, you will ensure our media investment delivers measurable impact and supports both brand and commercial objectives.
Joining the Global Media team, in Marketing & Communications, and in close partnership with Data & Analytics and media agency teams, you will be responsible for evolving our media measurement approach, as well as interpreting data from a range of measurement tools to extract key learnings and actionable insights. You’ll use these insights to inform global media planning decisions and help shape a more effective, insight-led paid media strategy.

What you will do:

Paid Media Effectiveness Manage and evolve the global paid media measurement framework, including media measurement methodologies, KPIs, reporting standards, learning agendas and experimentation

Establish a global learning and experimentation agenda, assessing paid media effectiveness through incrementality testing, lift studies, and Marketing Mix Modelling (MMM)
Support high-impact experiments that challenge channel assumptions and improve media investment decisions through evidence-based learnings

Drive the adoption of MMM and broader effectiveness insights across markets, ensure insights and recommendations are used to inform market media planning

Paid Media Reporting Manage the global paid media reporting ecosystem, including the creation of scorecards, dashboards, executive reporting, benchmarking, insights delivery, and reporting templates

Ensure consistency in reporting frameworks, KPIs and measurement standards across markets, enabling effective performance evaluation, benchmarking and decision-making

Translate complex data outputs into clear, compelling narratives for senior leadership and non-technical stakeholders

Provide regular reporting and strategic recommendations to global and regional stakeholders, linking paid media performance to business and commercial outcomes

Paid Media Budget Setting & Investment Planning Support media investment and annual budget setting work with agency partners and internal stakeholders to determine optimal media spends and splits per market

Utilise brand, customer and marketing data to create evidence-based, localised budget recommendations to inform regional paid media investment strategies

Support quarterly reforecasting and any shifts in investment through the application of MMM insight, customer acquisition KPIs and other media metrics.

Paid Media Measurement Projects Lead and coordinate cross-functional media effectiveness initiatives, managing project delivery across global, regional, agency and analytics teams

Manage relationships with third party measurement partners, agencies and technology suppliers, ensuring measurement methodologies, data quality and reporting standards are aligned to COS’ business objectives and measurement framework

Strengthen media measurement foundations by partnering with analytics teams and media platforms on initiatives such as conversion signal enhancement and offline sales integration

Evaluate and develop measurement approaches for emerging marketing channels and media priorities, including AI visibility and total search

Identify measurement challenges and develop solutions to ensure media activity is measurable across existing and emerging channels,…