Technical SEO and measurement

Crawlability, Core Web Vitals, structured data and GA4 or Tag Manager tracking that keeps working after the next redesign.

Who this is for

Teams whose organic traffic pays the bills and who suspect the site itself is in the way: slow templates, structured data that does not match the page, a migration that lost rankings, a redesign that broke tracking. It also fits teams that want the measurement side done properly, so the numbers in GA4 mean what they say.

I have worked in SEO for more than a decade; the technical side, where the templates, the server and the crawler meet, is where I stayed.

Typical situations

  • Core Web Vitals are red in Search Console and the last three fixes were plugins.
  • A redesign or migration went live and impressions dropped in the weeks after.
  • Rich results disappeared, or the structured data describes a page that no longer exists.
  • GA4 shows numbers nobody trusts, and Tag Manager has forty tags nobody owns.
  • Product or category pages get crawled but not indexed, and nobody knows why.
  • Four language versions, and hreflang points somewhere else.

What I deliver

  • Technical audit: crawl, indexing, canonicals, hreflang, redirects, sitemaps, robots, pagination and the rendering of JavaScript-heavy templates.
  • Core Web Vitals work at the source: templates, images, fonts, scripts and caching, not a plugin that hides the symptom.
  • Structured data that matches the page: Article, Product, FAQ, Breadcrumb and Organization, generated from templates and validated on every release.
  • Migrations and redesigns with a redirect map, a pre-launch crawl and a post-launch comparison.
  • GA4 and Google Tag Manager: event design, consent handling, server-side tagging where it is worth it, and a tracking plan the team can maintain.
  • Readiness for AI answer engines: clean HTML, stable anchors, llms.txt and content that can be quoted with its source.

How it goes

Crawl and compare. I crawl the site, read the templates and compare what the crawler sees with what Search Console and analytics report. The first output is a list of issues with the URL, the cause and the fix, ordered by impact.

Fix at the source. Changes go into the templates and the server configuration, on staging first. Tracking changes get a test plan with the events, their parameters and the reports they feed.

Watch the result. After release I follow indexing, vitals and the reports for a few weeks and hand over a short document of what to watch. Measurement can continue on a retainer.

Questions

Do you also write content or build links?

No. I fix the technical side and the measurement, and I advise on structure and internal linking. Content and outreach are better done by people who do only that.

Which platforms do you work with?

WordPress, WooCommerce and Magento most often, because I also do the engineering on them, and Shopify where the theme and the apps allow it. Audits and tracking work are platform-independent; for fixes on other stacks I work with your developers.

Do you also run the ad campaigns?

No. Campaign structure, product feeds and ad-platform conversion tracking are the digital marketing service on this site. What I build here, GA4 and Tag Manager events that fire once and match the orders, is what those campaigns are measured against.

Can you guarantee rankings?

No, and nobody honest can. What I can guarantee is that the site is crawlable, fast, correctly marked up and measured, with a before and after for each item.

What are the engagement forms?

A fixed-scope audit with a written report; a build project for a migration, a redesign or a tracking setup; or an ongoing retainer for measurement and monitoring. I quote after seeing the site.

Which company do I contract with?

Services are provided by Wizutech OÜ, a company registered in Estonia, to clients in the European Union and other countries, and by Wizutech Teknoloji, a company registered in Türkiye, to clients in Türkiye. The contracting entity is determined by the client's location and the applicable regulations and is named in the proposal; contract, invoicing, VAT and governing law follow that entity. The work is carried out by Hasan Gültekin in both cases.

Related writing

Core Web Vitals, structured data and crawlability, as I have applied them on real sites:

Working on something similar?

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