Global Media Effectiveness Manager

COS; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Up to 30 days holiday

Annual health checks

Pension scheme

Discounts on activities and products

Cycle to work scheme

Discounted gym membership

Employee assistance

Private health & dental care

Job summary

COS is seeking a Global Media Effectiveness Manager to lead strategic measurement and optimisation of our global paid media. You will partner with Data & Analytics and agencies to evolve our measurement framework and translate insights into action across markets.

You’ll drive MMM adoption, manage reporting ecosystems, and support budget planning with a focus on data-driven decisions that boost brand equity and commercial outcomes.

Qualifications

• Extensive years of paid media measurement experience within a large premium brand or agency environment.
• Paid media channel expertise across all paid media channels (paid social, display, OOH, CTV, paid search, programmatic, affiliates).
• Advanced proficiency in paid media measurement including MMM, lift studies, attribution models and balancing with in-platform signals.
• Data-driven decision making to interpret brand health, media and performance data and translate insights into actions.
• Deep understanding of P&L impact and linking upper funnel metrics to bottom line growth.
• Hands-on measurement tools experience: MMM tools, GA4, PowerBI, and in-platform lift studies.
• Budget optimisation and media efficiency to maximise ROI under constrained budgets.
• Stakeholder management and influence to drive global adoption of measurement frameworks.
• Excellent presentation skills and ability to translate data into clear narratives for leadership.

Responsibilities

• Lead and evolve the global paid media measurement framework and related KPIs, reporting standards and experimentation.
• Establish a global learning and experimentation agenda with incrementality testing and Marketing Mix Modelling.
• Support high-impact experiments to inform better media investment decisions.
• Drive MMM adoption across markets and translate insights into market media planning.
• Manage the global paid media reporting ecosystem including scorecards, dashboards and executive reporting.
• Ensure consistency of reporting frameworks and KPIs across markets for benchmarking and decision-making.
• Translate complex data outputs into clear narratives for senior leadership and non-technical stakeholders.
• Provide regular reporting and strategic recommendations to global and regional stakeholders linking performance to business outcomes.

Skills

Paid media measurement

Stakeholder management

Data-driven decisions

Presentation skills

P&L impact

Tools

GA4

PowerBI

MMM tools

Job 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, technologies and business priorities.

Qualifications

• Extensive years of paid media measurement experience within a large premium brand or agency environment
• Paid media channel expertise - deep knowledge of all paid media channels (paid social, display, OOH, CTV, paid search, programmatic, affiliates).
• Advanced proficiency in paid media measurement, including a strong understanding of brand health metrics, paid media attribution models, interpreting MMM, lift studies, and incrementality testing and how to balance them with in-platform signals.
• Data-driven decision making – strong analytical skills to interpret brand health, brand media and performance marketing data and translate insights into clear actions.
• Deep understanding of P&L impact. Expert at linking upper funnel brand equity metrics to bottom line growth.
• Hands-on measurement tools experience - MMM tools, GA4, PowerBI, and in-platform lift studies.
• Budget optimisation & media efficiency – ability to maximise ROI and drive impact with constrained budgets.
• Stakeholder management & influence - ability to navigate complex organisational structures and influence regional stakeholders to adopt global paid media measurement frameworks
• Excellent presentation skills, experienced communicator capable of navigating ambiguity by translating paid media data into clear, actionable narratives. Skilled at presenting and influencing stakeholders, ensuring media investment strategies are presented with clarity.

Additional Information

This is a Full time permanent contract based at our Head Office in London.

We value collaboration and believe that great ideas thrive when we work closely together. Therefore, this role is primarily office-based, with Three days per week at the office to foster teamwork and engagement. Two day per week, you’ll have the flexibility to work remotely.

WHY YOU’LL LOVE WORKING HERE

We offer all our employees attractive benefits with broad development opportunities. All our employees receive a staff discount usable on all our H&M Group brands in stores and online. In addition to our staff discount, all our employees are included in our H&M Incentive Program – HIP. You can read more about our H&M Incentive Program here.

• Up to 30 days holiday
• Annual health checks
• Pension scheme
• Discounts on various activities and financial/lifestyle products via our benefits hub
• Cycle to work scheme
• Discounted gym membership
• Employee assistance via retail trust
• Private health & dental care

JOIN US

Our uniqueness comes from a combination of many things – our inclusive and collaborative culture, our strong values, and opportunities for growth. But most of all, it’s our people who make us who we are. We are committed to a recruitment process that is fair, equitable, and based on competency.