Media Effectiveness Lead: MMM & ROI Optimization

Mars (New); Franklin (TN); On-site; USD 110,000 - 140,000; Full time

Job summary

Mars is seeking a Media Effectiveness Manager for our Franklin, TN office. You will lead media effectiveness frameworks across paid, owned, and earned media, and own the MMM learning agenda to drive annual planning and in-year optimization.

The role requires collaborating with brand, media, and analytics teams to define KPIs and translate complex data into actionable business recommendations. You will design cross-channel test-and-learn programs, analyze retailer media performance, and propose

Qualifications

• Bachelor's degree required.
• 4+ years of experience in digital marketing analytics or media effectiveness.
• Experience with MMM, attribution, or experimentation frameworks.
• Proven ability to translate complex data into actionable insights and business recommendations.
• Strong communication and storytelling skills.
• Demonstrated ability to influence and collaborate across a complex stakeholder environment.
• Experience with retail media is a nice-to-have.

Responsibilities

• Lead the development and deployment of media effectiveness frameworks to evaluate and optimize paid, owned, and earned media investments.
• Own and manage the MMM learning agenda, ensuring insights are translated into clear implications for annual planning and in-year optimization.
• Partner with brand, media, and analytics teams to define KPIs aligned to business objectives.
• Design, implement, and scale cross-channel test-and-learn programs to continuously improve media ROI and efficiency.
• Analyze campaign, commerce, and retailer media performance to identify key drivers of effectiveness and growth opportunities.
• Recommend in-year media mix optimizations through marketing mix modeling.
• Translate complex analytical outputs into clear, compelling insights and business recommendations for stakeholders at all levels.
• Support agency partners in the annual planning process, leveraging historical insights, MMM projections, and business priorities.
• Partner with media agencies and internal teams to optimize targeting, messaging, channel mix and investment allocation.
• Implement and embed a global creative testing framework, optimizing creative from concept through in-market execution.
• Codify and share learnings through playbooks, best practices, and "key beliefs" to enable scaling across brands and teams.

Skills

MMM

Attribution

Experimentation

Data-driven insights

Communication

Cross-functional collaboration

Ambiguity management

Retail media

Education

Bachelor's degree

Job description

Mars is seeking a Media Effectiveness Manager for our Franklin, TN office. You will lead media effectiveness frameworks across paid, owned, and earned media, and own the MMM learning agenda to drive annual planning and in-year optimization.

The role requires collaborating with brand, media, and analytics teams to define KPIs and translate complex data into actionable business recommendations. You will design cross-channel test-and-learn programs, analyze retailer media performance, and propose