SEM Marketing Specialist III

Thermofisher Open · verified Aug 17, 2026

Carlsbad Full-time Mid-level Paid Search / PPC

Mid-level Paid Search / PPC role at Thermofisher. Carlsbad · full-time · $83,300–$110,000 base.

SalaryStated by Thermofisher

$83,300 – $110,000

Base salary for this role, in USD per year, as published in the posting.

Role brief

Growth Roles summary, based on the employer's posting.

What you'll do

You’ll run daily paid-search and shopping work for assigned business units, tying channel activity to revenue goals
You’ll turn business needs into search tests, platform upgrades, automation ideas, and repeatable processes
You’ll inspect results and adjust account setup, bids, budgets, audiences, queries, and ad assets
You’ll prepare forecasts, spend guidance, attribution findings, and leadership-ready performance updates
You’ll test newer capabilities such as Performance Max, AI Max for Search, feeds, creative automation, and audience signals

What you bring

At least five years running paid search, including enterprise Google Ads and Microsoft Advertising programs with substantial budgets
A Bachelor’s degree plus experience across Search, Dynamic Search Ads, Shopping Ads, Performance Max, and AI-enabled campaigns
Understand how automated bidding, budgets, audiences, queries, match types, and account design affect results
Use Google Analytics or Adobe Analytics, Microsoft Excel, and A/B testing to assess and improve campaigns
Explain complex findings clearly, work with large datasets, and apply AI and automation with human oversight

Who this fits

You’ll suit an analytical SEM specialist who can make business-led decisions, explain results to partners and leaders, and improve processes independently. The role is on-site in Carlsbad, California, follows a standard Monday-to-Friday schedule, and works within an agile marketing team. Agile marketing experience is a plus rather than a stated requirement.

From the employer

Work Schedule

Standard (Mon-Fri)

Environmental Conditions

Office

Job Description

How will you make an impact?

We need a highly motivated, analytical SEM Marketing Specialist III to own, plan, launch, maintain, and optimize paid search and shopping programs in support of global SEM efforts for the Biosciences Division and Genetic Sciences Division, within the Life Sciences Solutions Group. This role will support a critical revenue-driving channel, helping deliver measurable revenue growth, Search roadmap priorities, and scalable SEM capabilities across the business.

The ideal candidate has deep hands-on experience leading enterprise-level paid search programs, with the ability to move quickly, make data-informed decisions, and prioritize work based on business impact. This person will bring a balanced mix of marketing strategy, platform expertise, analytical rigor, and sound business judgment.

We offer the opportunity to manage large advertising budgets, influence future-state Search capabilities, and drive performance as part of a collaborative digital marketing team using industry-leading platforms. Together, we can make a difference through innovative, analytical, and scalable campaign optimization.

This is an on-site position in Carlsbad, CA.

What will you do?

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.

How will you get here?

Education

The minimum educational requirement is a Bachelor’s degree

Required Experience:

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.

Knowledge, Skills, Abilities:

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.

Ability to leverage AI-enabled tools, automation, and platform recommendations to improve campaign performance, workflow efficiency, testing velocity, and decision-making while applying sound business judgment and appropriate human oversight.

Use data, dashboards, and performance narratives to communicate actionable insights that improve critical metrics and inform business decisions.

Strong time management, planning, and prioritization skills.

Self-starter who identifies and leads process or channel improvement efforts.

Standout colleague with a positive demeanor who goes above and beyond to accomplish business objectives.

Attention to detail.

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

Thermo Fisher Scientific is an EEO/Affirmative Action Employer and does not discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, disability or any other legally protected status

Compensation and Benefits

The salary range estimated for this position based in California is $83,300.00–$110,000.00.

This position may also be eligible to receive a variable annual bonus based on company, team, and/or individual performance results in accordance with company policy. We offer a comprehensive Total Rewards package that our U.S. colleagues and their families can count on, which includes:

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