MEDIUMCoding & Algorithms
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Determine winner in optimal-play card game
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Affirm Interview Questions
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MEDIUMAnalytics & Experimentation
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Diagnose Sudden Drop in Credit-Card Approval Rate
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MEDIUMSystem Design
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Design an A/B testing platform
Distributed Systems Consistency ModelsEvent Streaming PlatformsData Warehousing and OLAP vs. OLTP DatabasA/B Testing Statistical Principles
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MEDIUMSystem Design
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Design restaurant shift scheduling
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EASYSystem Design
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Design a Ticketmaster-like ticketing system
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EASYCoding & Algorithms
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Implement an LRU cache
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HARDSystem Design
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Design an A/B Testing Platform
Consistent Hashing / Deterministic BucketiEvent Streaming & ProcessingFeature Flags / Configuration Management SDistributed Caching
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HARDCoding & Algorithms
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Compute Balances and Minimize Settlements
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MEDIUMSystem Design
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Design Installment-Loan Payment Processing
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MEDIUMBehavioral & Leadership
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MEDIUMBehavioral & Leadership
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MEDIUMBehavioral & Leadership
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EASYAnalytics & Experimentation
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MEDIUMBehavioral & Leadership
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MEDIUMData Manipulation (SQL/Python)
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EASYSoftware Engineering Fundamentals
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