FAQ

Do senior candidates need to master both scaling diagrams and privacy checklists?
Yes. Senior loops at Amazon (2023‑09‑14) and Google (2024‑02‑10) each penalize missing one side; the combined mastery gave a 5‑0 Hire in both cases.

Can I skip the System Design Interview if I have a strong Playbook record?
No. The Meta 2024‑04‑18 senior debrief showed a 3‑1 No Hire when the candidate omitted scaling depth, despite a perfect Playbook score.

What’s the fastest way to prove depth in both resources?
Prepare a single case study that maps Alex Xu’s capacity plan to the Playbook’s failure‑isolation checklist; use a concrete example like “designing a 10 M QPS fraud detection pipeline” and rehearse the exact Slack quote from Maya Li (2024‑06‑03).

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