Adaptive practice
AI-Assisted Interviews
Get real-time feedback on your architecture choices from an intelligent interviewer that adapts to your seniority level.
Practice System
Design Before
The Interview.
Work through a system design prompt, sketch your architecture, and explain your trade-offs in voice or chat. Get focused AI feedback before the real interview.
Interview prompt library
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Everything you need to practice the full interview
A focused workspace for prompts, diagrams, conversation, and feedback—without switching tools.
Think visually
Interactive Whiteboard
Draw system diagrams with an intuitive canvas. Create components, map data flows, and explain your design visually.
Interview library
Real-world Problems
Practice common interview-style prompts, from URL shorteners to globally distributed social networks.
Ready for a focused
practice session?
Work through one prompt, explain your design, and review the feedback while it is still fresh.