SEM Marketing Specialist III

Carlsbad, CA (On-site)

$83K/yr – $110K/yrMid Level5+ years expFull time

Posted 2 days ago

Job Summary

Own and optimize SEM programs for enterprise-scale paid search, translating business needs into strategy, testing plans, automation opportunities, and leadership-ready performance narratives.

  • Define roadmaps and testing plans across Search and Shopping.
  • Forecast, budget recommendations, and executive-ready reporting.
  • Lead knowledge-sharing and agile collaboration to improve velocity.

Job Description

Responsibilities

  • Serve as the internal SEM channel owner for assigned business units, leading day-to-day strategy, execution, measurement, and optimization of paid search and shopping programs that support revenue growth, and business priorities.
  • Lead multiple, simultaneous Search roadmap priorities, translating business needs into channel enhancements, testing plans, platform improvements, automation opportunities, and scalable operating processes.
  • Monitor campaign performance, conduct investigative analyses, and find opportunities to improve and optimize search campaign performance.
  • Analyze, experiment with, and refine existing SEM account structures, campaign types, bid strategies, budgets, targeting methods, and creative assets to improve performance across core paid search programs.
  • Evaluate, pilot, and scale emerging Search capabilities, including Performance Max, AI Max for Search, feed-based campaigns, feed readiness, creative automation, and audience signal strategies, to advance the future-state Search roadmap.
  • Own SEM performance narratives for stakeholders and leadership, including forecasting, budget recommendations, spend pacing, attribution insights, and executive-ready reporting.
  • Lead SEM knowledge-sharing sessions covering standard methodologies, strategy, industry updates, platform changes, automation, AI Search, Shopping, measurement, and testing learnings.
  • Participate in scrum ceremonies and follow agile principles as part of an agile team, using project management software.

Requirements

  • The minimum educational requirement is a Bachelor’s degree
  • 5+ years of hands-on paid search experience, including experience managing enterprise-scale Google Ads and Microsoft Advertising programs, large budgets, and cross-functional business stakeholders.
  • Experience managing a variety of campaign types, including Search, Dynamic Search Ads, Shopping Ads, Performance Max, and other automated or AI-enabled campaign types.
  • Deep understanding of automated bidding, Smart Bidding, budget pacing, audience signals, match types, query management, campaign structure, and performance tradeoffs.
  • Proficiency with analytics platforms such as Google Analytics or Adobe Analytics.
  • Intermediate proficiency in Microsoft Excel.
  • Experience with A/B testing and implementing resulting actions.
  • Excellent communication skills, with the ability to translate complex SEM performance insights into clear business recommendations.
  • Ability to present to a variety of partners and leadership.
  • Analytical and problem-solving skills and ability to analyze large data sets from multiple sources.

Preferred

  • Experience in agile methodology within a marketing organization is a plus.

Benefits

  • A choice of national medical and dental plans, and a national vision plan, including health incentive programs
  • Employee assistance and family support programs, including commuter benefits and tuition reimbursement
  • At least 120 hours paid time off (PTO), 10 paid holidays annually, paid parental leave (3 weeks for bonding and 8 weeks for caregiver leave), accident and life insurance, and short- and long-term disability in accordance with company policy
  • Retirement and savings programs, such as our competitive 401(k) U.S. retirement savings plan
  • Employees’ Stock Purchase Plan (ESPP) offers eligible colleagues the opportunity to purchase company stock at a discount
  • For more information on our benefits, please visit: https://jobs.thermofisher.com/global/en/total-rewards
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Thermo Fisher Scientific

About Thermo Fisher ScientificThermo Fisher Scientific Inc. is the world leader in serving science, with annual revenue of approximately $40 billion. Our Mission is to enable our customers to make the world healthier, cleaner and safer. Whether our customers are accelerating life sciences research, solving complex analytical challenges, increasing productivity in their laboratories, improving patient health through diagnostics or the development and manufacture of life-changing therapies, we are here to support them. Our global team delivers an unrivaled combination of innovative technologies, purchasing convenience and pharmaceutical services through our industry-leading brands, including Thermo Scientific, Applied Biosystems, Invitrogen, Fisher Scientific, Unity Lab Services, Patheon and PPD. For more information, please visit www.thermofisher.com.

Founded in 1956
Waltham, Massachusetts, USA
101K employees (3,005 in marketing)

Salaries

Posted range

$83K/yr – $110K/yr

Taken straight from the job posting.

See all Thermo Fisher Scientific salaries

Funding

Total Funding
$19.8B
Last Raise
$3.8B
Post IPO Debt, 1 months ago

Funding History

  • Feb 2026
    Post IPO Debt • $3.8B
  • Nov 2025
    Post IPO Debt • $2.4B
  • Sep 2025
    Post IPO Debt • $2.5B

Traffic Signals

Monthly Visitors
5.3M
Monthly Google Ads Budget
$747.7K
Traffic Source Mix
Search
62%
Direct
27.5%
Referral
7.3%
Social
1.7%
Paid
1.4%

Headcount Trend

Current headcount: ~100.7K

Recent News

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SEM Marketing Specialist III

Thermo Fisher Scientific · Carlsbad, CA · On-site