The monthly search report used to tell a simple story: rankings up, traffic up, everyone pleased. That link has loosened. A query can now be answered inside an AI Overview or AI Mode, so impressions climb while clicks stay flat, and content tools can fill a site with competent pages in an afternoon, which makes competent pages worth less. The SEO skills that hold their value are diagnostic ones: working out whether a page is being crawled, indexed, shown, cited and clicked, and deciding which gap deserves a developer’s time.
This guide is for the recruiter or marketing head who has to tell that ability apart from a CV full of tool logos. It sets out the core abilities with a practical test for each, the habits behind strong specialists, what has gained and lost weight, a matrix by level and a way to run the assessment.
Core SEO skills and a practical test for each
Crawl and index management
A capable specialist treats crawling, rendering and indexing as separate stages, and reads the Page indexing report in Search Console as a list of different problems, not one big error count. How to check it: show “Crawled, currently not indexed” and “Discovered, currently not indexed” against two batches of product pages, then ask what each status suggests. The first usually points towards quality or duplication, the second towards crawl priority, weak internal links or server limits.
JavaScript rendering
More sites now run on React frameworks or a headless CMS, where the HTML a server sends can differ sharply from what a browser shows. Strong people compare the two as a matter of routine. How to check it: describe a page whose main copy and internal links appear only after a script runs, and ask how they would confirm what Google actually sees. Look for the URL Inspection tool’s rendered output, a request for server-side rendering or prerendering, and an insistence on plain crawlable links.
Site migrations and redirect mapping
Migrations are where a small error costs the most, because a whole site’s history is being moved at once. Good specialists map old URLs to their closest new equivalents, keep redirects direct, and plan the checks that follow launch as carefully as the launch itself. How to check it: hand over ten old URLs and a new site structure in which three of them have no obvious home, and ask for the map. Sending all three to the home page is a warning sign. A better answer weighs each page’s links and traffic, and explains which pages can fairly be retired.
Keyword mapping and cannibalisation
Keyword research is widely taught, so the harder skill is deciding which single page should answer which group of queries. How to check it: provide a Search Console export where two URLs swap positions on the same query, and ask whether to merge them, separate their angles or do nothing. Strong candidates look at intent and at who is clicking before they touch anything.
Internal linking and site architecture
This is the cheapest lever most sites have, since no outside party needs to agree. A specialist should be able to find pages buried deep in the structure, pages with no internal links at all, and templates that spread links badly. How to check it: give them a crawl export and a list of the pages that earn revenue. Ask them to find the worst-linked earner and name three pages that should link to it, with the anchor text they would use.
Structured data
Good practitioners write and read JSON-LD, keep it true to what is visible on the page, and understand what markup can and cannot do. How to check it: say a page passes the Rich Results Test but shows no enhancement in search, and ask why. The answer you want is that valid markup only makes a page eligible, and Google decides what to display.
Judging content quality
Google’s spam policies now name scaled content abuse, however the pages were produced, so an SEO specialist needs an editor’s eye for first-hand evidence as well as a checklist. How to check it: place two drafts on one topic side by side, a smooth generic one and a rougher one containing real examples from the business. Ask which they would publish and what they would send back to the writer. Listen for specifics about experience, sources and what a reader can do next.
Earning links
Useful link work today looks like digital PR, original data and relationships with trade publications. Paying for links that pass ranking credit still breaches Google’s spam policies, however politely an agency describes it. How to check it: give them ten link prospects from an imaginary agency list, including sites that publish anything for a fee, and ask which they would reject. Experienced candidates spot unrelated topics and sites with no real readers.
Visibility in AI search
Nobody has a settled method here, so honesty is part of the skill. A sensible specialist makes content easy to extract, keeps brand facts consistent across the web, reads Search Console’s generative AI performance reports and tracks citations by hand or with a tool, while saying plainly how thin the evidence is. How to check it: run a commercial question from your market in AI Mode and in ChatGPT during the interview. Ask why those sources were cited and what they would try next.
Working skills that set strong specialists apart
- Getting work shipped. A finding only matters once it is live. The best specialists write a ticket with the affected URLs, the expected behaviour and a way to test the fix, then work out how to get it into the next sprint.
- Ranking problems by money. An audit can produce hundreds of items. Strong people cut that to the few fixes that touch pages with commercial value, and they are comfortable leaving minor warnings unresolved.
- Explaining uncertainty to leadership. Search results shift for reasons nobody fully controls. Good specialists separate what they know from what they suspect, and they do not take credit for a rise they cannot explain.
- Testing before believing. The field is full of confident opinions after every core update. Reliable people read Google’s own documentation, run a change on a small group of pages first and write down what happened.
Which SEO abilities are gaining ground, and which are fading
Mattering more. Measuring beyond the click has become essential, because impressions, citations and branded demand now carry part of the story. Technical literacy matters more as JavaScript sites spread. Editorial judgement counts for more now that first drafts are cheap, and reviewing AI-written pages and metadata is a daily task. Knowing how to build small workflows, such as using an AI assistant to classify large query exports or draft redirect maps, is a real advantage, as long as the person samples the output and checks it.
Mattering less. Writing meta descriptions one at a time, compiling rank reports by hand and hitting a keyword density belong to an older version of the job. Exact-match anchor tactics and buying directory links carry more risk than value. Keyword volume on its own also says less, since a high-volume query may now be answered without a click.
SEO skills matrix by level
| Skill area | Junior | Mid-level | Senior |
|---|---|---|---|
| Crawl and indexing | Reads index reports, flags errors | Finds causes and proposes fixes | Sets crawl policy for large sites |
| Rendering and code | Reads page source | Compares raw and rendered output | Advises engineers on architecture |
| Migrations | Checks redirects from a list | Builds the map and launch checks | Leads the migration and its risk plan |
| Keyword mapping | Groups keywords by intent | Maps queries to pages, resolves overlap | Sets the site’s topic structure |
| Content judgement | Follows a brief format | Writes briefs, reviews drafts | Decides what the site stops publishing |
| Link earning | Researches prospects | Runs small outreach campaigns | Builds digital PR programmes |
| AI search | Knows the main features | Tracks citations on priority queries | Shapes strategy and leadership reporting |
| Reporting | Pulls standard reports | Explains changes in plain terms | Ties organic work to pipeline and budget |
How to assess SEO specialists in a hiring process
A sharp advert does half the filtering, so begin with a clear SEO specialist job description. After that, the following exercises use real materials and stay well short of free consulting.
- A live teardown. Pick a competitor’s page in your market and give the candidate time in the interview to explain why it outranks yours, using only the browser and page source.
- A prioritisation sort. Hand over twelve audit findings written on one sheet, mixing serious and trivial ones. Ask them to choose three, then explain what they would tell a developer about each.
- A past mistake. Ask about an SEO change that made things worse. People who have done the work have a story, and the recovery tells you more than the original error.
- A reporting rewrite. Give them a dull monthly report and ask them to reduce it to five lines for a founder.
Red flags on a CV: promises of first-page positions; keyword counts offered as the main result; no mention of working with developers; traffic claims with no named site or time frame that can be discussed; and tool lists far longer than the list of outcomes.
Frequently asked questions
Do SEO specialists need to know how to code?
They need to read HTML and understand how JavaScript and servers affect a page, but they rarely need to build anything. The ability to write a small script or a regular expression is useful on large sites and is a bonus elsewhere.
Is generative engine optimisation a separate skill from SEO?
Mostly it is an extension of the same work. Sound crawling, clear content and a credible brand help in both places. The new parts are tracking citations and accepting weaker measurement, so test for those within a normal SEO interview.
Can an agency SEO succeed in an in-house role?
Often, yes. Agency people have seen many sites and problems. The adjustment is depth: staying with one site for a long time, winning internal arguments and living with the results of their own advice. Ask how they feel about that.
Can a content writer move into SEO?
Writers usually bring strong intent and quality instincts, which is a good start. What they tend to lack is technical knowledge and comfort with data, so check those two areas closely before offering anything beyond a junior or content-led role.
Zilo AI can help you hire SEO specialists in India for a contract, contract-to-hire or permanent role, and other marketing roles sit on our non-IT talent page. Talk to our team about your site and where its search problems seem to lie.