< Back to search
Mars UK • USA-Tennessee-Franklin | United States of America

Media Effectiveness Manager

Employment type:  Full time
View company profile
Apply now

Job Description

Job Description:

Media Effectiveness Manager

Franklin, TN

On-site

The Media Effectiveness Manager is responsible for advancing the effectiveness of media investments across brands by delivering actionable measurements, insights, and optimization strategies. This role leads the Marketing Mix Modeling (MMM) learning agenda and test-and-learn programs to improve media ROI and inform business decisions. The position exists to embed data-driven decision making and scalable best practices across a complex, matrixed organization.

What are we looking for?

  • Bachelor’s degree required

  • 4+ years of experience in digital marketing analytics or media effectiveness

  • Experience with media measurement approaches such as 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

  • Ability to operate effectively in ambiguous environments and drive alignment across teams

  • Experience with retail media nice to have

What would be your key 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

What can you expect from Mars?

  • Opportunity to bring your pet to work.

  • Commitment to create a safe, healthy, and sustainable world for our partners and the communities in which we operate.

  • Commitment to make A Better World For Pets™ a world where they’re healthy, happy and welcome

  • Commitment to our consumers and focus on positively impacting the planet and the population.

This role is based in Franklin, TN with regular in-office collaboration expected. Flexibility is a key enabler—empowering associates to make choices that support both business outcomes and personal needs, including occasional remote work.

Mars does not sponsor visas for this role.

This position is not eligible for relocation benefits.

#LI-MS1

#LI-onsite

Apply now

Company benefits

Open to part-time employees
Open to job sharing
Open to compressed hours
Sabbaticals
Enhanced maternity leave – 26 weeks at 90% pay
Enhanced paternity leave – 26 weeks at 90% pay
24 days annual leave + bank holidays
“Pawternity” leave
Pregnancy loss leave
Bank holiday swaps
Shared parental leave
Adoption leave
Family health insurance
Pregnancy support
Neonatal leave
Faith rooms
Meditation space
Dog friendly office
Dog friendly co-working space
Annual bonus
Employee discounts
Cinema discounts
Referral bonus
Joining bonus
Cycle to work scheme
Electric Car Salary Sacrifice
Enhanced pension match/contribution
Theme park discounts
Lunch and learns
In house training
Learning license
Studying sabbaticals
Open to part time work for some roles

Working at Mars UK

Company employees:

4,000 In the UK

Gender diversity (m:f):

57:43

Hiring in countries

Argentina

Australia

Austria

Belgium

Brazil

Bulgaria

Canada

China

Czechia

Denmark

Estonia

France

Germany

Awards & Accreditations

1st - Most Family Friendly Company

1st - Most Family Friendly Company

Flexa awards 2026
3rd - Best Workplace Benefits

3rd - Best Workplace Benefits

Flexa awards 2026
Most loved - Large companies

Top 5 - Most loved - Large companies

Flexa awards 2026
Best Work-Life Balance

Top 10 - Best Work-Life Balance

Flexa awards 2026
1st - Most Family Friendly Company

1st - Most Family Friendly Company

Flexa awards 2025
2nd – Pet Friendly

2nd – Pet Friendly

Flexa awards 2025
Most Flexible Company

Top 5 - Most Flexible Company

Flexa awards 2025
Most Inclusive Company

Top 5 - Most Inclusive Company

Flexa awards 2025
Best Work-Life Balance

Top 10 - Best Work-Life Balance

Flexa awards 2025
Best Career Progression

Top 10 - Best Career Progression

Flexa awards 2025
Best Workplace Culture

Best Workplace Culture

Flexa awards 2025
Best Workplace Benefits

Best Workplace Benefits

Flexa awards 2025
1st – Large companies

1st – Large companies

Flexa100 2024
Consumer Goods

Consumer Goods

Industry awards 2023
3rd – Large companies

3rd – Large companies

Flexa100 2023
Retail & Ecommerce

Retail & Ecommerce

Industry awards 2022

Other jobs you might like

Flexa
Discover companiesFind a jobResourcesSign in/up
For employers
Flex spring

Join the mailing list

Get the latest insights and expert guidance on job hunting, career progression, and creating thriving workplaces.

Enter your email
  • About us
  • Contact us
  • FAQs
  • Info for employers
  • Join Flexa
  • Legal
  • Live feed
  • Pioneer awards
  • Resources
  • Sign in/up
  • The Flexa awards
Flexa

Hungary

India

Italy

Japan

Kazakhstan

Latvia

Lithuania

Malaysia

Mexico

Netherlands

New Zealand

Norway

Poland

Romania

Russia

Slovakia

South Korea

Spain

Switzerland

Thailand

Türkiye

Ukraine

United Arab Emirates

United Kingdom

United States

Office Locations

Mars UK

Associate Media Manager

USA-Tennessee-Franklin | United States of America

#1 MOST FAMILY FRIENDLY COMPANY

Mars UK

Senior Data & Analytics Product Manager - North America

$134,400 – $184,800 per annum

USA-Missouri-Creve Coeur | USA-Tennessee-Franklin | SDX-Antech Diagnostics Inc- Mars Science …

#1 MOST FAMILY FRIENDLY COMPANY

Mondelēz International

Retail Media Manager (F/M/X)

Warsaw, Poland | Poland

Mars UK

Senior Category Manager

USA-Tennessee-Franklin | United States of America

#1 MOST FAMILY FRIENDLY COMPANY

Mars UK

Brand Manager - eCommerce and Brand Building

USA-Tennessee-Franklin | United States of America

#1 MOST FAMILY FRIENDLY COMPANY