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Real interview questions, grouped by company or by question type. Pick any one and start solving in your browser — no sign-in required. Sign in any time to keep your progress and get it scored on four dimensions.
Filter60 of 60 questions
OpenAI
39 questionsGPU Credit Tracker
HighLow-Level DesignCoding
Onsite · Phone
Toy Language Type System
HighLow-Level DesignCoding
Onsite · Phone
Infection Spread Simulation
HighLow-Level DesignCoding
Onsite · Phone
Durable Key-Value Store Serialization
HighLow-Level DesignCoding
Onsite · Phone
Chat Bot System Refactoring
HighLow-Level DesignCoding
Onsite · Phone
In-Memory Database with SQL Operations
HighLow-Level DesignCoding
Onsite · Phone
IPv4 Address Iterator with CIDR Support
HighLow-Level DesignCoding
Onsite · Phone
Transformer Debug
HighAI CodingML Coding
Onsite · Phone
Vectorized 1-NN and Neural Network Forward Pass
HighAI CodingML Coding
Onsite · Phone
Multi-Tenant CI/CD Workflow System
HighSystem DesignSystem Design
Onsite · Phone
Payment Processing System (Stripe-like)
HighSystem DesignSystem Design
Onsite · Phone
Slack-like Chat System
HighSystem DesignSystem Design
Onsite · Phone
Design an AI Chatbot System
HighSystem DesignSystem Design
Onsite · Phone
Distributed Machine Cluster Count and Topology
MediumLow-Level DesignCoding
Onsite · Phone
Dependency Version Check
MediumLow-Level DesignCoding
Onsite · Phone
Memory Allocator
MediumLow-Level DesignCoding
Onsite · Phone
Monster Battle System
MediumLow-Level DesignCoding
Onsite · Phone
Social Network with Snapshots
MediumLow-Level DesignCoding
Onsite · Phone
Design Chess.com (Online Chess Game)
MediumSystem DesignSystem Design
Onsite · Phone
Design a Cloud IDE
MediumSystem DesignSystem Design
Onsite · Phone
Design a Crossword Puzzle Solver
MediumSystem DesignSystem Design
Onsite · Phone
Webhook Delivery System
MediumSystem DesignSystem Design
Onsite · Phone
Design a RAG-Based Chatbot System
MediumSystem DesignML System Design
Onsite · Phone
Mining Novel Data from Large Unlabeled Corpus
MediumSystem DesignML System Design
Onsite · Phone
Prefix Matrix Products and Backpropagation
NewAI CodingML Coding
Onsite
Online Softmax Entropy
NewAI CodingML Coding
Onsite
LLM Inference Timeout and Restart Strategy
NewLow-Level DesignMath
Onsite
LRU Cache (AI Coding)
NewAI Coding
Onsite
Data Labeling Task Scheduler
Low-Level DesignCoding
Onsite · Phone
Implement a CD Command
Low-Level DesignCoding
Onsite · Phone
Shard Rebalancing
Low-Level DesignCoding
Onsite · Phone
Resumable Iterator with Multi-Dimensional Support
Low-Level DesignCoding
Onsite · Phone
ModalLock and FairModalLock
Low-Level DesignCoding
Onsite · Phone
Points of Interest (POI) / Yelp
System DesignSystem Design
Onsite · Phone
GPT-3 Playground - Full-Stack Architecture
System DesignSystem Design
Phone
Design a URL Shortener
System DesignSystem Design
Onsite · Phone
Design Google Calendar
System DesignSystem Design
Phone
Design YouTube
System DesignSystem Design
Onsite · Phone
Design Sora Video Generation Scheduling
System DesignSystem Design
Phone
Anthropic
21 questionsWeb Crawler
HighLow-Level DesignCoding
Onsite · Phone
Deduplicate Files
HighLow-Level DesignCoding
Onsite · Phone
Converting Stack Samples to Trace Events
HighLow-Level DesignCoding
Onsite · Phone
Distributed Mode and Median
HighLow-Level DesignCoding
Onsite · Phone
LRU Cache (Python)
HighLow-Level DesignCoding
Onsite · Phone
Tokenize (Python)
HighLow-Level DesignCoding
Onsite · Phone
Batch Image Processor
HighLow-Level DesignCoding
Onsite · Phone
In-memory Database (Online Assessment)
HighLow-Level DesignCoding
Inference API System Design
HighSystem DesignSystem Design
Onsite · Phone
Prompt Engineering Playground System Design
HighSystem DesignSystem Design
Onsite · Phone
Distributed Model Deployment System Design
HighSystem DesignSystem Design
Onsite
Banking System (Online Assessment)
MediumLow-Level DesignCoding
Task Management System (Online Assessment)
MediumLow-Level DesignCoding
Bootloader
NewLow-Level DesignCoding
Onsite · Phone
Cloud Storage System (Online Assessment)
Low-Level DesignCoding
Recipe Manager (Online Assessment)
Low-Level DesignCoding
Batch Processing Service System Design
System DesignSystem Design
Phone
1-to-1 Chat System Design
System DesignSystem Design
Onsite · Phone
Culture & Behavioral Interview Questions
BlogBehavioralReading & discussion
Hiring Manager Interview Questions
BlogBehavioralReading & discussion
Employee Management System (Online Assessment) [ARCHIVED]
Low-Level DesignCoding