Interview questions
Find a company or topic. Read the sources, then practice.
Loading the question library…
Find a company or topic. Read the sources, then practice.
Loading the question library…
Showing 826–850
Companies: Google
Authentication & Authorization · System Design
Last reported Mar 2026
Design a real-time motion detection system that receives motion event streams, notifies users of new motion within the last 10 seconds, and provides motion history…
Companies: Monzo
Last reported Mar 2026
Design an API service catalog system that allows developers to discover, browse, and manage APIs with features like API documentation, versioning, and usage analytics.
Companies: Kong
Last reported Mar 2026
Companies: Meta
System Design
Last reported Mar 2026
Design a smart alarm system that can be installed across home devices, mobile phones, and smart watches, where alarms can be set or deleted from…
Companies: Google
Last reported Mar 2026
Design a system that ingests large volumes of events in batches, handling concerns such as data validation, transformation, reliable delivery, and scalable storage.
Companies: Microsoft
Last reported Mar 2026
Design a system migration strategy to transition a payment pricing service from a legacy system to a new modern architecture while maintaining service availability and…
Companies: PayPal
Last reported Mar 2026
Companies: Meta
System Design
Last reported Mar 2026
Companies: Meta
System Design
Last reported Mar 2026
Companies: Microsoft
LLM Inference & Serving · System Design
Last reported Mar 2026
Design a high-availability, low-latency configuration management system that allows developers to commit configuration changes and have them propagate globally across multiple…
Companies: Apple
Last reported Mar 2026
Companies: Uber
System Design · System Design Fundamentals
Last reported Mar 2026
Companies: OpenAI
Distributed Transactions & Idempotency · Payments & Ledgers · System Design
Last reported Mar 2026
Design a video calling application similar to Apple FaceTime that allows users to make one-on-one and group video calls with features like call management, contact…
Companies: Apple
Last reported Mar 2026
Companies: Uber
System Design
Last reported Mar 2026
Companies: Netflix
System Design
Last reported Mar 2026
Companies: Anthropic
File & Media Storage · System Design · System Design Fundamentals
Last reported Mar 2026
Design a flashcard-based learning platform similar to Quizlet, where users can create and manage decks of flashcards, search and discover existing decks, and scale the…
Companies: Quizlet
Last reported Feb 2026
Design a system component for an e-commerce website that tracks and displays users' last 5 browsed items in a widget without affecting the existing functionality.
Companies: Expedia
Last reported Feb 2026
Design a shuffler component for MapReduce that enables efficient communication and data transfer between Mapper and Reducer nodes. The system should handle data partitioning…
Companies: Google
Last reported Feb 2026
Companies: Meta
System Design
Last reported Feb 2026
Companies: Meta
System Design
Last reported Feb 2026
Companies: Meta
System Design
Last reported Feb 2026
Companies: Meta
System Design
Last reported Feb 2026
Companies: Meta
System Design
Last reported Feb 2026