Head of Marketing Effectiveness

We are seeking a strategic and data-driven Head of Marketing Effectiveness to lead the brand performance measurement agenda for a major client account with a diverse portfolio of brands. This is a senior SLT role responsible for embedding rigorous marketing effectiveness principles and driving business impact through evidence-based insights.

Working at the intersection of data, strategy, and client leadership, this role partners closely with client-side Marketing Science teams, Brand Managers, and senior marketing leaders. Internally, the role supports the OMD Business Management teams in developing and defending media investment strategies grounded in robust effectiveness thinking.

What you'll do:

• Lead the marketing effectiveness agenda across the client's portfolio of brands, providing thought leadership on measurement frameworks, incrementality, and media ROI.
• Oversee the end-to-end management and interpretation of Marketing Mix Modelling (MMM) studies.
• Build trusted relationships with senior client stakeholders, including Brand Managers and Marketing Science teams.
• Act as a strategic advisor on investment decisions, annual portfolio and brand campaign planning, long and short-term effectiveness strategy.
• Manage and mentor a Business Analyst, ensuring continuous development and delivery of high-quality insights, dashboards, and reporting outputs.
• Partner with OMD's Business Management teams to integrate effectiveness insights into media strategy and planning.

What you'll need:

• Proven experience in a marketing effectiveness, marketing science, or analytics leadership role-ideally within media, consulting, or client-side environments.
• Deep expertise in Marketing Mix Modelling (MMM), including end-to-end management, and applying outputs to drive strategy.
• Strong understanding of brand management, media channels, campaign attribution, and business performance metrics.
• Excellent communication skills with a track record of engaging and influencing senior stakeholders.
• Ability to distil complex data into compelling stories and business recommendations.
• Experience managing or mentoring analysts or junior team members.
• Commercial mindset and passion for driving client growth through data-led marketing.

What's in it for you?

• Access to top tier clients and complex business challenges
• Continuous development through our mixed learning approach
• All the tools, equipment and mentors you need to be successful in your role
• Our organisation encourages diversity, supports charities and environmental initiatives
• We have a bright, open plan and dog friendly office (we love our furry friends)
• We encourage and fully support flexible working
• Parental leave
• Fun social events - Annual ski trips

A little bit about us...

We are a proud part of the OMD global network, the world's leading marketing and communications agency. As part of the Omnicom Media Group, we provide services to over 5,000 clients in more than 100 countries and employ 11,000 staff.

Since launching in 2000, OMD Australia has grown to become Australia's largest media and communications agency, consistently winning awards including:

Great Place to Work | Platinum Status: Top 50 for 15 consecutive years

B&T | Media Agency of the Year 2019, 2020 & 2021, Culture 2020

B&T Women in Media | Employer of the Year 2019 & 2020

Adnews | Media Agency of the Year 2020, Overall Agency of the Year 2020

Mumbrella | Media Agency of the Decade , Culture 2019

Adweek | Global Media Agency of the Year 2019 & 2020

Next steps

Sound exactly like the sort of role for you? Apply now

If you've got any questions or wish to have a confidential conversation about this role, contact the Talent team. We'd love to hear from you.