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 weekly.
Design a production ranking system with robust feature drift monitoring across batch and real-time features at high QPS.
Alpaca
World Wide Technology
MetaDesign a shared feature store for training and low-latency inference across many ML systems with strict freshness and consistency needs.
Hewlett Packard Enterprise
Invoca
Industrial and Commercial Bank of ChinaDesign an end-to-end product recommendation system for a large e-commerce marketplace with strict latency and freshness needs.
Candescent
Pluralsight
Alcatel-Lucent MotiveDesign a URL shortening service that routes, ranks, and monitors links at scale.
Amazon DSP
Applied Intuition
Dover IndiaDesign an LLM serving system that balances latency, cost, scalability, and safety for production traffic.
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Design a cloud ML deployment system for a security product, covering training, serving, updates, and production monitoring.
American Association Of Motor Vehicles
Spectraforce
TwilioDesign a personalized recommendation system that turns user preferences into ranked suggestions with retrieval, ranking, and feedback loops.
G-TECH Services
Fujitsu
Principal Financial GroupDesign a distributed ML serving platform that stays available and scales under failures, traffic spikes, and model updates.
MongoDB
UST
Ellucian