Technical SEO Interview Questions 2026: Real Questions I Was Asked

A few days ago, I sat for a technical SEO interview. Not a generic one either – the company works in blockchain and Web3, so the questions mixed technical SEO with company-domain knowledge.
I’m sharing the exact questions here, with simple answers. If you’re preparing for an SEO interview in 2026, this should save you hours of scattered searching.

Quick Answer: What Do Technical SEO Interviews Actually Test?

Three things, mostly:

1. Do you understand the company and its website (traffic, pages, indexing)?
2. Do you know technical SEO fundamentals (redirects, crawl, indexing, schema)?
3. Can you explain modern issues – like why a page ranks on Google but doesn’t show in AI Overview?

Let’s go through each, in the order they usually come up.

Step 1: Research the Company Before You Walk In

My interviewer asked me directly:

• “How much traffic does the site get?”
• “How many pages are indexed?”
• “What’s the total page count?”
• “What’s the biggest SEO issue you found?”

This isn’t a trick question. It checks whether you actually looked at the website before showing up.

How to answer this well:

Check	Where to find it
Organic traffic	Ahrefs, Semrush, or Similarweb (estimate)
Indexed pages	site:domain.com search
Total pages	Sitemap.xml file, or a Screaming Frog crawl
Domain Authority / Rating	Moz, Ahrefs
Backlinks & referring domains	Ahrefs, Semrush

Real example from my interview: The company’s sitemap listed 3,005+ URLs, but Google Search Console showed only 301 pages indexed. That gap – thousands of pages written, only a fraction indexed – was the single biggest issue on the site. Naming that specific number, instead of saying “indexing issues exist,” is what makes an answer sound like real research, not a memorized definition.

Step 2: Company Domain Knowledge (Blockchain Company Example)

Since this was a Web3 company, I was asked basic blockchain and Web2 vs Web3 questions. Even if you’re not applying to a blockchain company, expect a version of this – interviewers want to see you understand what the business actually sells.

Web2 vs Web3 – Quick Comparison

Feature	Web2	Web3
Ownership	Company	User
Data control	Centralized	Decentralized
Login	Email/password	Crypto wallet
Payments	Bank/card	Cryptocurrency
Storage	Company servers	Blockchain/IPFS
Example apps	Facebook, Amazon	Uniswap, OpenSea

Tip: If the company offers both Web2 and Web3 services (many blockchain agencies do – AI development, app development, alongside smart contracts and DeFi), say so clearly. It shows you read their services page, not just their homepage.

Step 3: Technical SEO Questions (The Core of the Interview)

This is where most of the interview time went. Here are the exact questions, explained simply.

What is an Orphan Page?

An orphan page is a page with zero internal links pointing to it. No other page on the site links to it, so search engines – and users – struggle to find it.

Why it’s a problem: Google mostly discovers pages by following links. An orphan page can sit unindexed for months.

How to find them: Crawl the site with Screaming Frog and compare the list of crawled URLs against your sitemap and internal link data. Any sitemap URL with zero inbound internal links is orphaned.

How to fix them: Add internal links from relevant pages – blog posts, category pages, or the navigation menu.

404 vs 410 – What’s the Difference?

	404	410
Meaning	Page not found	Page gone permanently
Google’s behavior	Keeps checking back	Removes it faster
Use when	Page deleted by accident, might return	Content is permanently discontinued

Example: If a blog post got deleted by mistake, that’s a 404 – Google will keep trying it. If a product is discontinued forever, use a 410 so Google removes it from the index faster and stops wasting crawl budget on it.

301 vs 302 Redirects – What’s the Difference?

	301	302
Type	Permanent redirect	Temporary redirect
SEO value	Passes ranking signals	Mostly doesn’t pass value
Old URL	Removed from index over time	Stays indexed
Use case	Domain migration, permanent URL change	Maintenance page, short-term test

Common mistake: Using a 302 for a permanent change. This confuses Google – it keeps the old URL indexed and doesn’t fully transfer ranking value to the new one.

Where Do You Find Crawl Stats in Google Search Console?

This one trips up a lot of candidates. The path is:

Settings → Crawl Stats

Inside this report, you can see:

• Total crawl requests over time
• Response codes (200, 301, 404, etc.)
• File types crawled (HTML, images, CSS/JS)
• Host status (server health for Googlebot)
• Crawl purpose (discovery vs refresh)

This report tells you how efficiently Google is spending its crawl budget on your site – useful for spotting wasted crawls on broken or low-value URLs.

Robots.txt, Sitemap, and llms.txt

Robots.txt tells crawlers what they can and can’t access:

User-agent: *

Disallow: /admin/

Allow: /

Sitemap: https://www.example.com/sitemap.xml

Sitemap.xml lists your important URLs so Google can discover and crawl them faster.

llms.txt is newer – it gives instructions to AI crawlers (like those powering ChatGPT, Claude, or Gemini) about what content they can access and use. It’s still early, but it’s becoming a real part of technical SEO checklists for 2026.

Allow:

/blog/

Disallow:

/private/

Step 4: Why Does a Page Rank on Google but Not in AI Overview?

This was, honestly, the most interesting question I got: “A blog is ranking well in normal search results. Why isn’t it showing up in the AI Overview?”

Here’s the honest answer – it usually comes down to one or more of these:

• Weak E-E-A-T (no clear author, no real experience shown)
• Missing or incomplete schema (especially FAQ schema)
• Thin content – technically ranks, but doesn’t fully answer the query
• No original data, statistics, or first-hand examples
• Weak internal linking to related topics (low topical authority)
• Content isn’t structured in a clear, extractable way (no direct answers, no lists)
• A competitor’s page simply covers the topic more completely

AI Overview tools don’t just check rankings – they check whether a page is easy to summarize and trustworthy enough to quote. A page can rank at position 3 and still get skipped if a competitor’s content is more structured and better sourced.

Step 5: What Does a Full Technical SEO Audit Cover?

I was asked to walk through a technical audit from scratch. Here’s the structure I used:

Area	What to check
Crawlability	Robots.txt, XML sitemap, crawl budget, crawl errors
Indexability	Index coverage, noindex tags, canonical tags, duplicate URLs
URL structure	SEO-friendly, no unnecessary parameters, consistent format
Redirects	301/302 usage, redirect chains, redirect loops
Broken links	Internal and external, checked with status codes
Site architecture	Click depth, orphan pages, internal linking
Core Web Vitals	LCP, INP, CLS
Mobile & HTTPS	Mobile-friendliness, valid SSL
Structured data	Schema types implemented and validated
AI readiness	llms.txt, entity optimization, AI-friendly content structure

Walking through this list out loud, in order, shows the interviewer you have a repeatable process – not just scattered knowledge.

Step 6: Google Search Console Questions

Expect a few rapid-fire questions on GSC:

• Where do you check Crawl Stats? – Settings → Crawl Stats
• What does URL Inspection do? – Shows the live and indexed status of a specific URL
• What’s in the Coverage report? – Indexed, excluded, and error pages
• What’s the Performance report for? – Clicks, impressions, CTR, and average position by query
• What’s under Removals? – Temporary URL removal from search results

Step 7: Scenario-Based Questions

Toward the end, the questions got practical:

• “A website isn’t ranking at all. Where do you start?” – Start with indexability: is it even indexed? Then check technical basics, then content and links.
• “How would you fix a redirect chain?” – Map every hop, then point the first redirect directly to the final destination.
• “How do you identify orphan pages on a large site?” – Crawl the site, cross-check against the sitemap and internal link reports.

Interview Preparation Checklist

Before your next technical SEO interview, run through this:

• Analyze the company website (traffic, pages, indexing, top issues)
• Know their services and how SEO supports them
• Revise redirects, status codes, and crawl/index basics
• Understand orphan pages, canonical tags, and duplicate content
• Be ready to explain AI Overview visibility issues
• Practice walking through a technical audit structure out loud
• Know where every key report lives inside Google Search Console 

FAQs: Technical SEO Interview Questions

1. What are the most common technical SEO interview questions?
Redirects (301 vs 302), error codes (404 vs 410), crawlability, indexability, orphan pages, Core Web Vitals, and how to run a technical audit.

2. How do I prepare for an SEO interview as an experienced candidate?
Go beyond definitions. Analyze the actual company website beforehand, and be ready to quote real numbers – traffic, indexed pages, and specific issues you noticed.

3. What is the difference between 404 and 410 in SEO?
A 404 means the page isn’t found right now but might return. A 410 means it’s gone permanently, and Google should stop checking it.

4. Why is a page ranking on Google but not appearing in AI Overview?
Usually weak E-E-A-T, missing schema, thin content, or poor internal linking around the topic. AI Overview favors well-structured, well-sourced content.

5. Where do I find Crawl Stats in Google Search Console?
Under Settings → Crawl Stats. It shows crawl requests, response codes, and Googlebot activity over time.

6. What should a technical SEO audit include?
Crawlability, indexability, URL structure, redirects, broken links, site architecture, Core Web Vitals, structured data, and AI readiness.

Final Thoughts

Technical SEO interviews in 2026 aren’t just about definitions anymore. They test whether you can read a real website, spot real issues, and explain modern problems like AI Overview visibility. Research the company, know your fundamentals, and practice explaining your process out loud – that combination is what separates a memorized answer from a confident one.