The questions that actually come up at Google, Amazon, Meta, Microsoft, and Netflix — curated and grouped by skill area. Not a learning path, but a targeted interview readiness check. Work through these when you want to assess your current level.
API testing questions appear in virtually every SDET loop. These three problems cover the full spectrum: basic error handling (easy warm-up), schema contract validation (common at Google and Amazon), and Bearer token authentication testing (common at Stripe and Netflix).