The decomposition prompt we use to teach the skill that actually decides these interviews: graceful iteration under perturbation. Your score isn't your design; it's the delta when the design gets punched.
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Decompose: predict flight delays, and survive the interviewer changing the rules every five minutes.
The decomposition prompt we use to teach the skill that actually decides these interviews: graceful iteration under perturbation. Your score isn't your design; it's the delta when the design gets punched.
Updated Sep 2026 · Grounded in real Forward Deployed Engineer interview loops and written to a senior-engineer editorial bar.
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Next in this trackDesign a webhook delivery system: retries, ordering, and debugging your customers can do themselves.Next in this trackDesign rate limiting and quotas for an API with free, pro, and enterprise tiers.Next in this trackYour product embeds inside a customer's app. Design auth: SSO, SAML/OIDC, and row-level security.
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