SEO

Technical SEO interviews focus on how crawlers discover, render, and index your app: accurate metadata, canonicalization, sitemaps, robots guidance, structured data, and rendering choices—not keyword density tricks.

Subtopics: metadata, canonical URLs, sitemap, robots.txt, structured data, SSR/SSG impact.

On interviews: diagnose duplicate product URLs; choose SSR vs SSG for a marketing site; explain why robots.txt does not protect secrets.

Common pitfalls: client-only meta; conflicting canonical signals; invalid JSON-LD; infinite faceted URLs in sitemap.

The trade-off is marketing URL flexibility versus consolidated crawl signals.

Checklist:

• Unique titles and canonicals per indexable page.
• Align sitemap, internal links, and redirects.
• Validate structured data against visible content.
• Inspect crawler HTML, not only SPA state.