Interview questions
Find a company or topic. Read the sources, then practice.
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Showing 351–375
Present and walk through the design of a real system you have previously worked on, explaining your architectural decisions, trade-offs, and how you addressed key…
Companies: Amazon, Microsoft, OpenAI, Oracle +1
Last reported Sep 2026
Reservations across several flights require temporary holds, strict seat ownership, fresh search results, and safe payment recovery.
Companies: Axon, Bol.Com, Circle, Expedia +2
concurrency · flight-search · idempotency · inventory
Last reported Sep 2026
Design an ATM system that allows users to perform banking operations such as cash withdrawals, deposits, balance inquiries, and PIN management.
Companies: Check, Revolut
Last reported Sep 2026
Design an online multiplayer tic-tac-toe game that allows players to create or join game rooms, play against each other in real-time, and track game results.
Companies: Dialpad, Expedia, Remitly
Last reported Sep 2026
Companies: Anthropic
Distributed Transactions & Idempotency · Real-Time Systems · System Design
Last reported Sep 2026
Companies: Harvey
Authentication & Authorization · System Design
Last reported Sep 2026
Design a real-time commenting system that allows users to view and post comments instantly while watching live videos or browsing posts across Meta platforms. The…
Companies: Amazon, Bloomberg, Figma, Google +3
Last reported Sep 2026
Design an auction system where users can create auction posts for items, place bids, view top bidders, and receive notifications when auctions end.
Companies: Adobe, Apexx Global, Intuit, Meta +1
System Design
Last reported Sep 2026
Design a paste bin service similar to Pastebin that allows users to create, share, and access text snippets with optional expiration dates and monitoring capabilities…
Companies: NVIDIA, Servicetitan
Last reported Sep 2026
Companies: Disney
System Design
Last reported Aug 2026
Analytical SQL over shared data: durable loads, parallel queries, and separate compute capacity for concurrent workloads.
Companies: Snowflake
compute-lifecycle · concurrent-read-correctness · data-access · metadata-management
Last reported Aug 2026
Design a cryptocurrency exchange platform that allows users to buy, sell, and trade digital currencies with features like order matching, wallet management, and real-time…
Companies: Airbnb, Coinbase
Last reported Aug 2026
Design a system that allows users to view and monitor their virtual machines across multiple global regions, displaying key information such as node name, region…
Companies: Google
Last reported Aug 2026
Companies: Fora Travel
System Design
Last reported Aug 2026
Design a library book reservation system that allows users to view available books, place holds on books, and manage their current reservations.
Companies: Databricks, Flourish
Last reported Aug 2026
Companies: Roblox
System Design
Last reported Aug 2026
Companies: Apple
Real-Time Systems · System Design
Last reported Aug 2026
Design a real-time social graph service that calculates the shortest path (degree of separation) between any two users in a network of 1 billion users…
Companies: Meta, Rubrik
Last reported Aug 2026
Design a recommendation system similar to Amazon that analyzes customer activity and browsing patterns to provide personalized top-k product recommendations.
Companies: Amazon, Google, Mastercard
Last reported Aug 2026
Design a train reservation system that allows users to search for trains, book seats, and handle reservations with focus on low-level implementation details like booking…
Companies: Bloomberg
Last reported Aug 2026
Design an ad server system that delivers targeted advertisements to users based on their preferences and behavior, while optimizing for performance and revenue.
Companies: Amazon, Google, Spotify
Last reported Aug 2026
Companies: Nuro
System Design
Last reported Aug 2026
Companies: Fora Travel
System Design
Last reported Aug 2026
Companies: Generalmotors
System Design
Last reported Aug 2026
Companies: Stripe
System Design
Last reported Aug 2026