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 1,001–1,025
Companies: Meta
System Design
Last reported Dec 2025
Companies: Anthropic
Concurrency · Rate Limiting · System Design
Last reported Dec 2025
Design a Buy Now Pay Later (BNPL) system that allows users to make purchases immediately and pay for them in installments over time, including payment…
General practice
Last reported Dec 2025
Design an event management platform that allows users to create, discover, and manage events, including features like event registration, ticketing, and attendee management.
Companies: Marvin
Last reported Dec 2025
Companies: OpenAI
Fault Tolerance & Failover · System Design · System Design Fundamentals
Last reported Dec 2025
Design a system for a cloud provider that collects billing metrics from all customers, processes and stores the data, and forwards it to downstream systems…
Companies: Nutanix
Last reported Dec 2025
Design an online healthcare platform that allows users to access medical records based on their permission levels and view educational video tutorials. The system should…
Companies: Oracle
Last reported Dec 2025
Design a privacy system for a social media platform that controls post visibility based on three privacy settings: only-me, friends, and public.
Companies: Meta
Last reported Dec 2025
Coding: A LeetCode-style problem where you need to "flip K most ones" to get the maximum island (likely Max Consecutive Ones III), with a follow-up…
Companies: LinkedIn
Last reported Dec 2025
Companies: OpenAI
Authentication & Authorization · Real-Time Systems · System Design
Last reported Dec 2025
Companies: Meta
System Design
Last reported Dec 2025
Companies: Meta
System Design
Last reported Dec 2025
System design interview: file system design Coding exercise: An immutable tree structure being hashed and compared to a remote via an API efficiently
Companies: Jane Street
Last reported Dec 2025
Design a mobile photo application that allows users to search for photos using keywords and retrieve all images containing those elements (e.g., searching for 'mountains'…
Companies: Google
Last reported Nov 2025
Companies: Meta
Data Structure Design · System Design
Last reported Nov 2025
Design a system that can automatically generate and conduct surveys by converting phone calls into text message interactions, allowing users to respond to survey questions…
Companies: Aurelian
Last reported Nov 2025
Design a high-speed electric vehicle charging network that enables seamless "plug and charge" functionality, where cars automatically identify themselves, initiate charging…
Companies: Tesla
Last reported Nov 2025
Design a system that allows users to subscribe to upcoming offers on an e-commerce platform and receive real-time notifications (email, SMS, push, or in-app) when…
Companies: Google, Twilio
Last reported Nov 2025
Design a building management system that tracks employee locations and activities in real-time. The system should provide the current number of employees in the building…
Companies: Apple, Thrive Global
Last reported Nov 2025
Companies: Meta
Real-Time Systems · System Design
Last reported Nov 2025
Companies: Microsoft
System Design
Last reported Nov 2025
Location-based discovery with large exclusion histories, race-free mutual matching, and privacy rules that must survive cached feeds.
Companies: Amazon, Uber
concurrency-control · event-driven-processing · geospatial-indexing · idempotency
Last reported Nov 2025
High-frequency location updates, geospatial indexing, matching with contention, trip state machine.
Companies: Uber
consistency · geospatial-indexing · high-write-throughput · matching
Last reported Nov 2025
Design a transaction processing system that allows users to perform withdrawals and deposits, ensuring data consistency, security, and reliable transaction handling.
Companies: Highnote
Last reported Nov 2025
Companies: Amazon
System Design · System Design Fundamentals
Last reported Nov 2025