Interview Simulator · System Design
Design Company-Wide Identity and Access
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.
Design identity and access for 25,000 employees, 6,000 services, and 90M customers. Three legacy auth systems issue incompatible sessions today, and every service checks permissions its own way. Cover SSO, service identity, authorization policy, and the migration off all three legacy systems.