Search engine marketing specialist: what the role runs, the skills to test for, and how to hire one

A search engine marketing specialist is the person who plans, builds and improves paid search campaigns on platforms such as Google Ads and Microsoft Advertising. Day to day, that means choosing keywords, writing ads, setting bids and budgets, tracking conversions and cutting wasted spend. In most job adverts, "SEM specialist" means paid search. Some employers also fold SEO into the title, so read the duties, not the label, and hire by testing the candidate on a real account problem.

What the title means in practice

Search engine marketing has two definitions in circulation. The broad one covers everything you do to win visibility in search engines, paid and organic. The narrow one, which most practitioners and hiring managers use, means paid search only. Our page on the difference between SEO and SEM explains where the split comes from.

So when a business posts an SEM specialist role, it almost always wants someone who can run a paid search account well. If you also need organic work, say so in the job description and expect a different skill set, or hire for it separately.

What an SEM specialist does, week by week

The work falls into five recurring jobs.

• Keyword and audience research. Finding the searches that signal buying intent, grouping them into themes, and building negative keyword lists so the account does not pay for irrelevant searches.
• Campaign structure. Splitting campaigns and ad groups by product, service, location or margin so that budget can be controlled where it matters.
• Ad copy and landing pages. Writing ads that match the search, testing variations, and pointing each ad at a page that answers the same need.
• Bidding and budget. Choosing bid strategies, setting targets, and moving money between campaigns as results come in.
• Measurement. Setting up conversion tracking correctly, reading the search terms report, and reporting cost per lead or sale rather than clicks.

On a healthy account, the routine looks like this: a quick daily check for spending spikes and disapproved ads; a weekly pass through search terms, bids and ad tests; and a monthly review of structure, budget split and landing pages against business results.

The skills that separate a strong specialist

Platform knowledge is the entry ticket. What separates a strong specialist is judgement about money.

Skill	What good looks like	How to test it
Commercial thinking	Talks about cost per sale and margin before clicks and click-through rate	Ask what number they would report to the owner each month
Search term discipline	Reads the search terms report every week and builds negatives from it	Show a real report and ask what they would exclude
Tracking	Can explain how a conversion is recorded and spot double counting	Ask how they would check that form fills are tracked once
Structure	Builds campaigns around how the business makes money	Ask how they would split budget across two services with different margins
Writing	Ads that match the search and the landing page	Ask for three ads for one of your keywords
Automation sense	Uses automated bidding and campaign types deliberately, with clear limits	Ask when they would not use a fully automated campaign

Certifications and what they prove

Google offers Google Ads certifications to individuals through its Skillshop training platform. Google describes them as professional accreditations for people who demonstrate proficiency in basic and advanced aspects of Google Ads, and candidates take assessments on Skillshop to earn them. A current certification shows that someone has learned how the platform works.

Treat it as a baseline. It does not show whether the person can make an account profitable for a business like yours. A short practical exercise, described below, tells you far more.

In-house specialist, freelancer or agency

The right model depends on how much you spend and how many channels you run.

• In-house specialist. Best when paid search is a large, steady part of your marketing and needs daily attention plus close work with sales or product teams.
• Freelancer. Best for a single account of moderate size, or to fix a neglected account before you decide on a longer arrangement.
• Agency. Best when you need several channels, cover for holidays, or specialist depth such as shopping feeds. Our comparison of SEM agencies explains the fee models and how to judge one.

Whichever route you choose, keep the ad account, the analytics property and the tracking setup owned by your business, with the specialist added as a user. That way the history stays with you if the arrangement changes.

How to hire one: a five-step process

1. Write the job around outcomes. Name the platforms, the monthly spend range, and the result you care about, such as qualified leads at a target cost.
2. Screen for commercial language. In a first call, notice whether the candidate asks about your margins, sales cycle and lead quality.
3. Run a paid exercise. Give a shortlisted candidate read-only access to an account, or an anonymised export, and ask for a written list of the first five changes they would make and why.
4. Check references on results. Ask past employers or clients what changed in cost per lead or sale, and how the candidate communicated when results dipped.
5. Agree a 90-day plan. Set what will be fixed in month one, tested in month two and reported in month three, so both sides know what success looks like.

Warning signs in a candidate

• Promises a specific ranking position or a fixed return before seeing your account.
• Reports only impressions, clicks and click-through rate.
• Wants to run the account under their own login or manager account with no access for you.
• Cannot explain how your conversions are counted.
• Recommends the same campaign setup for every business.

Questions about search engine marketing specialists

Is an SEM specialist the same as a PPC specialist?

In most job adverts, yes. Both titles describe someone who runs pay-per-click search campaigns. PPC can also include paid social, so check the platforms listed in the role.

Does an SEM specialist do SEO?

Usually not as the main job. Some roles combine the two, especially in small teams, but paid search and organic search need different daily skills. If you need both, write both into the job description.

What tools does an SEM specialist use?

The ad platforms themselves, such as Google Ads and Microsoft Advertising, plus an analytics tool for conversion data and a spreadsheet for analysis. Many also use a keyword research suite and a reporting dashboard.

How do I measure an SEM specialist's work?

By business results: cost per lead or sale, the share of leads that turn into customers, and revenue against spend. Clicks and impressions are useful diagnostics, not targets.

Do I need a certified specialist?

A Google Ads certification is a sensible baseline that shows platform knowledge. Hire on the practical exercise and references, which show whether the person can improve an account like yours.

The search result no specialist can bid on

A good SEM specialist makes sure your ad appears when someone searches "best accountant for small business" on Google. The same question typed into ChatGPT, Gemini or Perplexity returns a short list of names with no ad auction behind it, and the names come from what those assistants have read about each business. That answer sits outside every paid search report, which is why it is worth checking on its own. Measuring whether an assistant names your business, and fixing the reasons it does not, is the category AI Knows Us works in.