Interview Simulator · System Design
Design an Internal Deploy Platform
A full 45 minute round, one phase at a time. Each phase has a time budget, follow-up questions from the interviewer, and a checklist for your level. Reveal a phase's model answer whenever you need it; the report shows which phases you earned.
Sixty teams ship 400 services across three regions, each with its own scripts on shared CI. Design the deploy platform they all move to, with progressive rollouts, automatic rollback on bad metrics, and policy gates such as change freezes and required reviews.