Associate Marketing Manager, Advertising and Social Media

Portsmouth, NH (On-site)

$97K/yr – $156K/yrMid Level5+ years expFull time

Posted 2 weeks ago

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Job Summary

Own cross-channel paid media planning and agency leadership while aligning organic social execution with a LinkedIn-first strategy for a B2B insurer audience.

  • Own the development and execution of annual media plans, serving as the primary point of contact with our media agency to finalize and implement plans — including publisher selection, budget allocation, tactical mix, production schedules, and digital measurement.
  • Bring strong advertising expertise and market awareness to continuously evaluate and evolve media strategy, ensuring Liberty Mutual remains competitive and best-in-class across paid channels.
  • Monitor competitive intelligence and industry trends across paid digital and media channels, proactively identifying opportunities to differentiate and improve performance.
  • Champion A/B testing and optimization strategies across paid campaigns, applying learnings to improve targeting, creative performance, and spend efficiency over time.
  • Collaborate with the Creative Services team and Marketing segment leads to develop compelling ad assets that align with business priorities, brand guidelines, and channel best practices, providing media channel expertise to inform creative strategy.
  • Partner with Marketing Strategy to proactively identify campaign opportunities, ensuring sufficient time is built in for campaign development, reviews, and approvals.
  • Maintain and share a forward-looking campaign plan organized by month and by audience to keep cross-functional partners aligned and informed.
  • Lead agency relationships with a strategic lens, managing budgets and performance expectations while challenging partners to deliver actionable insights, fresh thinking, and innovative approaches that continuously improve our advertising programs.
  • Own organic social media execution for GRS U.S. LinkedIn profiles, including content publishing, cross-sharing strategy, editorial calendar management, and overall channel tone and presence.
  • Manage the social media employee engagement program (currently Yext/Hearsay), including onboarding and training, communication, content management, and measurement to drive adoption and usage among external-facing employees.

Job Description

Own cross-channel paid media planning and agency leadership while aligning organic social execution with a LinkedIn-first strategy.

  • Own the development and execution of annual media plans, serving as the primary point of contact with our media agency to finalize and implement plans — including publisher selection, budget allocation, tactical mix, production schedules, and digital measurement.
  • Bring strong advertising expertise and market awareness to continuously evaluate and evolve media strategy, ensuring Liberty Mutual remains competitive and best-in-class across paid channels.
  • Monitor competitive intelligence and industry trends across paid digital and media channels, proactively identifying opportunities to differentiate and improve performance.
  • Champion A/B testing and optimization strategies across paid campaigns, applying learnings to improve targeting, creative performance, and spend efficiency over time.
  • Collaborate with the Creative Services team and Marketing segment leads to develop compelling ad assets that align with business priorities, brand guidelines, and channel best practices, providing media channel expertise to inform creative strategy.
  • Partner with Marketing Strategy to proactively identify campaign opportunities, ensuring sufficient time is built in for campaign development, reviews, and approvals.
  • Maintain and share a forward-looking campaign plan organized by month and by audience to keep cross-functional partners aligned and informed.
  • Lead agency relationships with a strategic lens, managing budgets and performance expectations while challenging partners to deliver actionable insights, fresh thinking, and innovative approaches that continuously improve our advertising programs.
  • Own organic social media execution for GRS U.S. LinkedIn profiles, including content publishing, cross-sharing strategy, editorial calendar management, and overall channel tone and presence.
  • Manage the social media employee engagement program (currently Yext/Hearsay), including onboarding and training, communication, content management, and measurement to drive adoption and usage among external-facing employees.
Liberty Mutual Insurance logo

Liberty Mutual Insurance

At Liberty Mutual, we believe progress happens when people feel secure. By providing protection for the unexpected and delivering it with care, we help people embrace today and confidently pursue tomorrow. In business since 1912, and headquartered in Boston, today we are the eighth largest global property and casualty insurer based on 2023 gross written premium. We also rank 87th on the Fortune 100 list of largest corporations in the US based on 2023 revenue. As of December 31, 2023, we had $49.4 billion in annual consolidated revenue. We employ over 40,000 people in 29 countries and economies around the world. We offer a wide range of insurance products and services, including personal automobile, homeowners, specialty lines, reinsurance, commercial multiple-peril, workers compensation, commercial automobile, general liability, surety, and commercial property. For more information, visit www.libertymutualinsurance.com.

Founded in 1912
Boston, MA, US
37K employees (655 in marketing)

Traffic Signals

Monthly Visitors
426K
Monthly Google Ads Budget
$224.9K
Traffic Source Mix
Search
25.8%
Direct
46.6%
Referral
17.9%
Social
8.8%
Paid
0.7%

Headcount Trend

Current headcount: ~37.7K

Marketing Team

Marketing Team Size
441 (1% of company)
Median Career Experience
17 years
Median Tenure
9.1 years
Marketing Roles Posted (Last 30 Days)
2

Funding

Total Funding
$886.8M
Last Raise
$886.8M
Debt Financing, 6 months ago

Funding History

  • Sep 2025
    Debt Financing • $886.8M

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