Practice Questions
ML system design interview questions with AI-powered scoring.
Design a Context Management System for LLM AgentsAgentic AI—MediumDesign a Multi-Agent Orchestration SystemAgentic AI—MediumDesign a Simple Conversational Agent for Customer SupportAgentic AI—EasyDesign Agent Memory Architecture for Long-Running TasksAgentic AI—HardDesign an Agent Evaluation and Monitoring FrameworkAgentic AI—MediumDesign Tool-Use Safety Mechanisms for Autonomous AgentsAgentic AI—HardDesign a Feature Store for a Machine Learning PlatformML System Design—HardDesign a Fraud Detection System for FintechML System Design—MediumDesign a Multi-Tenant ML Inference PlatformML System Design—MediumDesign a Real-Time Recommendation System for E-CommerceML System Design—HardDesign a Search Ranking SystemML System Design—EasyDesign an Ad Click Prediction Pipeline at ScaleML System Design—HardChoose the Right Autonomy Level for a Financial Anomaly SystemMLOpsTradeoff & DecisionMediumDebug a Fraud Model with Segment-Level DegradationMLOpsDebugging & Incident TriageHardDefend a Proxy Label Choice Under VP Cross-ExaminationMLOpsReasoning Through AmbiguityMediumDefend Three Months of Problem Framing to a Skeptical VPMLOpsReasoning Through AmbiguityEasyDesign a Continuous Training PipelineMLOpsML System DesignHardDesign a Data Validation Pipeline for MLMLOpsML System DesignEasyDesign a Model Deployment and Rollback StrategyMLOpsML System DesignMediumDesign a Model Monitoring and Alerting SystemMLOpsML System DesignHardDesign an ML Experiment Tracking PlatformMLOpsML System DesignMediumDesign an ML Feature Engineering PlatformMLOpsML System DesignEasyDetect a Silent Framing Failure When Model Metrics Look FineMLOpsApplied ReasoningMediumDiagnose a Churn Model That Passed Eval but Moved No KPIMLOpsDebugging & Incident TriageHardFrame a Home-Page Recommendation System End to EndMLOpsML System DesignHardFrame a Real-Time Content Moderation System Under Hard ConstraintsMLOpsML System DesignHardFrame a Vague ML Request Using the Four-Layer StackMLOpsApplied ReasoningEasyHandle Multi-Week Label Lag in a Search Ranking ReframeMLOpsProduction ChallengeMediumInherit and Fix a Broken Recommendation SystemMLOpsReasoning Through AmbiguityMediumReframe a Multiclass Classifier That Cannot ScaleMLOpsTradeoff & DecisionMediumRules vs. ML for Support Ticket RoutingMLOpsTradeoff & DecisionEasyScore a Proxy Label on Five DimensionsMLOpsApplied ReasoningMedium