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642 questions in the library. A source association does not guarantee a future interview question.
Behavioral and leadership · Coding · Machine learning · ML system design · Object-oriented design · Other questions · Practical engineering · Product and business · System design
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Design a real-time multiplayer typing race platform where players can join races, type a shared text prompt simultaneously, and be ranked by speed and accuracy…
Companies: OpenAI
Last reported Nov 2026
Build an in-memory analytics service that ingests a stream of chat interaction logs and supports efficient sliding-window queries for recent interaction counts, live session…
Companies: OpenAI
Last reported Nov 2026
Companies: OpenAI
ML Coding · Model Evaluation
Last reported Nov 2026
Design a cloud-based development environment system that allows developers to create, configure, and manage isolated development containers with pre-installed tools and…
Companies: OpenAI, DoorDash
Last reported Nov 2026
Code a simple KV with serialize/deserialize functions, where key/value are strings and can contain any character.
Companies: OpenAI
Last reported Nov 2026
Companies: OpenAI
File & Media Storage · System Design · System Design Fundamentals
Last reported Oct 2026
Companies: OpenAI
Messaging & Event-Driven · System Design · System Design Fundamentals
Last reported Oct 2026
Companies: OpenAI
ML Coding · Sampling & Estimation
Last reported Oct 2026
Companies: OpenAI
Data Structure Design
Last reported Oct 2026
Companies: OpenAI
Annotation & Label Quality · ML Coding
Last reported Oct 2026
Companies: OpenAI
Simulation & State Machines
Last reported Oct 2026
Companies: OpenAI
Application Security · File & Media Storage · System Design
Last reported Oct 2026
Companies: OpenAI
Data Structure Design · Stacks & Queues
Last reported Oct 2026
Design a large-scale control system capable of monitoring and managing up to 1 million sensors in a medical or hospital setting, supporting real-time data collection…
Companies: OpenAI
Last reported Oct 2026
Companies: OpenAI
Low-Level Design (OOP)
Last reported Oct 2026
Companies: OpenAI
Communication & Stakeholders · Conflict & Collaboration
Last reported Oct 2026
Companies: OpenAI
Conflict & Collaboration
Last reported Oct 2026
Companies: OpenAI
Communication & Stakeholders · Conflict & Collaboration
Last reported Oct 2026
Companies: OpenAI
LLM Applications · Real-Time Systems · System Design
Last reported Oct 2026
Companies: OpenAI
Motivation & Fit
Last reported Oct 2026
Design a cloud-based AI agent platform that allows users to start a session with a prompt, where the agent autonomously uses a cloud-hosted browser to…
Companies: OpenAI
Last reported Oct 2026
Build a reusable Toast component in React based on provided UI specs and a demo video. The component should match the given design and replicate…
Companies: OpenAI
Last reported Oct 2026
Companies: OpenAI
Low-Level Design (OOP) · Sorting
Last reported Oct 2026
Companies: OpenAI
Multiplayer Game Systems · Real-Time Systems · System Design
Last reported Oct 2026
Companies: OpenAI
Fault Tolerance & Failover · System Design · System Design Fundamentals
Last reported Oct 2026