Skip to content

Explore

Questions Companies Concepts Guides Sign in

How it works Questions Companies Concepts Guides Pricing Sample scorecard

Interview questions

Find a company or topic. Read the sources, then practice.

Coding study plans Companies Design mock

Loading the question library…

Practice system design interviews out loud with an AI interviewer, a shared whiteboard and a scorecard for your level.

How it works Questions Concepts Questions by company Comparisons Technologies Guides Cheat sheet Sample scorecard FAQ Use it as an app Sign in Pricing About and how we write Terms and guidelines Privacy Policy Contact

© 2026 SysRound. SysRound is an AI practice tool. The AI interviewer and the AI feedback can be wrong. Use it for your own practice, not to hire people.

Interview questions by company and topic | SysRound

Search questions

CompanyType a name, then choose a company from the suggestions.

Question type

Difficulty

TopicType a topic, then choose one from the suggestions.

72 questions

Showing 1–25

System designMedium
Design an AI Voice Chat Assistant for a Sneaker Retailer's Website
Companies: Elevenlabs
Real-Time Systems · System Design
Last reported Nov 2026
Open workspace
System designMedium
Design an Instant Messenger With Sending, Delivered and Read Statuses
Companies: Bnsf
Real-Time Systems · System Design
Last reported Oct 2026
Open workspace
System designHard
Design a ChatGPT-style chat service with streaming model replies
Companies: OpenAI
LLM Applications · Real-Time Systems · System Design
Last reported Oct 2026

Page 1 of 3

System designHard

Design a Real-Time Multiplayer Typing Race Game

Companies: OpenAI

Multiplayer Game Systems · Real-Time Systems · System Design

Last reported Oct 2026

System designMedium

Design a Collaborative Prompt Playground

Companies: Anthropic

Authentication & Authorization · Real-Time Systems · System Design

Last reported Oct 2026

System designMedium

Design an In-App Notification Center with Real-Time Updates and Unread Counts

Companies: Roblox

Real-Time Systems · System Design

Last reported Oct 2026

System designMedium

Design a Notification System for Bursty Writes of 1M per Second

Companies: CoreWeave

Real-Time Systems · System Design

Last reported Sep 2026

System designHard

Design an Online Chess Platform: Elo Matchmaking, WebSocket Moves, Game Clocks

Companies: OpenAI

Multiplayer Game Systems · Real-Time Systems · System Design

Last reported Sep 2026

Practical engineeringHard

Text Editor in Four Stages: Buffer, Undo/Redo, Trie Autocomplete, Collaborative OT

Companies: OpenAI

Data Structure Design · Real-Time Systems

Last reported Sep 2026

System designMedium

Design a Notification System That Delivers Events to Users at Scale

Companies: Meta

Real-Time Systems · System Design

Last reported Sep 2026

System designMedium

Design a Real-Time Chat Service for One-to-One and Group Messaging

Companies: Meta

Real-Time Systems · System Design

Last reported Sep 2026

System designMedium

Design a Messaging App with Group Sends, Chat History and Chat Deletion

Companies: Databricks

Real-Time Systems · System Design

Last reported Sep 2026

System designMedium

Design a Global One-to-One Voice Calling System

Companies: Microsoft

API Design · Real-Time Systems · System Design

Last reported Sep 2026

System designMedium

Design a Real-Time Collaborative Document Editor With Version History

Companies: Asana

Real-Time Systems · System Design

Last reported Sep 2026

System designEasy

Design a Simplified WhatsApp: Message Send and Receive, Schema, and Scaling

Companies: Fivetran

Real-Time Systems · System Design

Last reported Sep 2026

System designHard

Design Durable One-to-One Web Messaging at Large Scale

Companies: Anthropic

Distributed Transactions & Idempotency · Real-Time Systems · System Design

Last reported Sep 2026

System designMedium

Design a Service for the Top K Most-Visited URLs over a Sliding Time Window

Companies: Apple

Real-Time Systems · System Design

Last reported Aug 2026

System designMedium

Design Sent, Delivered and Read Receipts for a Mobile Messaging App

Companies: Amazon

Real-Time Systems · System Design

Last reported Aug 2026

System designMedium

Design a Reliable Notification System

Companies: Meta

Real-Time Systems · System Design

Last reported Aug 2026

System designHard

Design a Large-Scale Streaming AI Product Feature

Companies: OpenAI

LLM Applications · Real-Time Systems · System Design

Last reported Aug 2026

System designMedium

Design a Real-Time Collaborative Document Editor with Concurrent Editing

Companies: Microsoft

Real-Time Systems · System Design

Last reported Aug 2026

System designMedium

Design an LLM-Powered Customer Service Chat System with Robust Failure Handling

Companies: Sierra

Real-Time Systems · System Design

Last reported Aug 2026

System designHard

Design ChatGPT: Streaming Replies over SSE and Rendering Long Conversations

Companies: OpenAI

LLM Applications · Real-Time Systems · System Design

Last reported Jul 2026

System designHard

Design Customer Support with Virtual-Agent-to-Human Escalation

Companies: Google

Real-Time Systems · System Design

Last reported Jul 2026

System designMedium

Design a Highly Available Conversational AI Service

Companies: OpenAI

Real-Time Systems · System Design · System Design Fundamentals

Last reported Jul 2026