Top 30 System Design Interview Questions
The most frequently asked questions on this topic across all roles and companies, ranked by real interview frequency. Updated daily.
Design a production ranking system with robust feature drift monitoring across batch and real-time features at high QPS.
Alpaca
Apex
SafaricomDesign a shared feature store for training and low-latency inference across many ML systems with strict freshness and consistency needs.
Hewlett Packard Enterprise
Invoca
DevoDesign an end-to-end product recommendation system for a large e-commerce marketplace with strict latency and freshness needs.
Frontier Technology
Meta
WishDesign a URL shortening service that routes, ranks, and monitors links at scale.
Amazon DSP
Applied Intuition
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Design a personalized recommendation system that turns user preferences into ranked suggestions with retrieval, ranking, and feedback loops.
Braze
G-TECH Services
Principal Financial GroupDesign a distributed ML serving platform that stays available and scales under failures, traffic spikes, and model updates.
Global Payment Holding
Cisco Restaurant + BarDesign a low latency ML inference platform for high-frequency online predictions with strict response times and evolving model features.
Anthropic
Roche
Analog Devices