We are seeking a Global Head of Media Effectiveness to lead the approach and application of media effectiveness at Havas Media Network, defining the frameworks and ways of working that prove and improve the value of media for clients.

This role sits at the intersection of strategy, data, analytics, and planning. This role will lead the development of robust measurement frameworks, test-and-learn programmes, and overall effectiveness positioning at HMN that clearly articulates the value of media and marketing investment across our diverse client portfolio. Critically this work will also serve as the platform to improve cross-selling of our CSA advanced analytics capabilities to clients.

Key Responsibilities

1) Effectiveness Leadership

• Define,ownand evolveHMN’seffectiveness philosophy, frameworks, andmethodologiesfor measuring marketing,campaignand channel effectivenessin collaboration with CSA

• Champion a culture of continuous improvement, experiment-based learning, and evidence-led planning across allglobal client teams.

• Represent the agency’s effectiveness POV internally and externally (e.g., pitches, industry councils, awardscasestudiesand jury representation).

• Develop training programmes to elevate data literacy and effectiveness thinking across the wider agencynetwork alongside the Global CSA team

2) Client & Commercial Impact

• Work closely with client leadership,strategistsand planners to set measurableobjectivesand define KPIs aligned toclient specificbusiness outcomes, not just media outputs.

• Develop compelling narratives andBoardleveleffectivenessstories that clearly connect media investment toreal businessimpactfor our global clients

• Work collaboratively with CSA to drive revenue on clients via newscopes of workincluding MMM, MTA, brand lift, attribution, incrementality testing, andbespoke analytics.

• Be the Measurement and Effectiveness lead on global pitches, involved in the process from RFI, through local market quality control to client pitch presentations.

3) Data, Tools & Methodologies

• Define the business needs forthemeasurement and effectivenessproduct roadmap alongside the Head of CSA andin collaboration with the Converged.AI Product team.

• Ensure planning teams are using best-practice measurement approaches and pre-/post-campaign evaluation frameworksfor global clients

• Guide the integration of 1P data, digital signals, and offline performance data into holistic evaluation modelsthat support clients’ own long term data strategies

Experience & Skills Required

• Proven experience in a senior effectiveness, measurement, data strategy or econometrics leadership role within a media agency, marketing consultancy, or client-side marketing analytics function.

• Strong understanding of brand-building, demand creation, and performance marketing measurement.

• Hands-on familiarity with effectiveness approaches such as:
  Econometrics / MMM
  Marketing attribution
  Incrementality testing / test & control
  Brand tracking / behavioural research
  Business KPI modelling

• Ability to translate complex analysis into clear and persuasive commercial narratives for senior stakeholders.

• Confident presenting to C-suite level clients and influencing strategic decisions.

• Experience managing and developing teams of specialists.

• Comfortable collaborating with planning, strategy, digital, and data science teams.

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