Interview prompt
Problem context
An administrator changed customer policy during an incident and later the relevant logs were missing. The same role could edit policy, operate the database, and delete log indexes. Regulators require trustworthy evidence and customers need support investigations without exposing other tenants.
Skills being evaluated
tamper-evident loggingseparation of dutiesprivileged accessforensic design
The full reasoning guide is part of Pro
The scenario and evaluation focus above remain public. Pro unlocks the structured answer, trade-off analysis, follow-up probes, common weak answers, rubric, related reasoning, and any architecture diagram.
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Clarify the decision
Establish scale assumptions
Functional and non-functional requirements
High-level architecture
Data model and flow
Consistency and transaction boundaries
Failure modes and recovery
Security and privacy
Observability and SLOs
Capacity and cost
Alternatives and trade-offs
Evolution and migration
What Staff and Principal candidates should emphasize