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Design a feature flag service that supports global ON/OFF controls, percentage-based rollouts, and sticky user assignments. The service should reliably manage feature visibility across different user segments while maintaining consistent user experiences.
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Hello Interview · 1 record
Snowflake
Build a Feature Flag Service
Reported Sep 1, 2026 · 3 source reports
MID_LEVEL, SENIOR, STAFF
Source snapshot: Nov 12, 2026
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