Collaborative visual canvas for architecture discussions. See how candidates structure complex systems—not just talk about them.
A Complete Design Environment
Everything candidates need to show their architecture thinking.
Infinite Canvas
Shape Library
Servers, DBs, queues, and more
Real-Time Collab
Annotations
AI Evaluation
Present Challenge
AI presents a system design problem: "Design a URL shortener for 10M users."
Draw Architecture
Candidate builds their design on the canvas, explaining as they go.
AI Probes
AI asks follow-ups: "How does this handle failures? What about 10x scale?"
Get Evaluation
You see their design thinking—not just the final diagram.
See Spatial Thinking
How candidates organize components visually reveals their mental model of complex systems.
Evaluate Trade-Offs
AI probes decisions: Why this database? Why this caching layer? Surface the reasoning behind choices.
Natural Collaboration
Feels like a real whiteboard session with a colleague—not a formal test with pressure.
Senior Backend
Notification System
Design a notification system for 10M users. Candidate diagrams queues, workers, delivery channels. AI evaluates scalability and failure handling.
Evaluates
Scalability
Failure modes
Async patterns
Infrastructure
CI/CD Pipeline
Design a deployment pipeline. Candidate maps build, test, deploy stages. AI probes for security, rollback, and monitoring.
Evaluates
DevOps
Security
Reliability
Product Engineer
Ride-Sharing Backend
Design the backend for a ride-sharing app. AI assesses both technical architecture and product thinking.
Evaluates
Real-time
Geo-spatial
Product sense
Watch how Whiteboarding transforms system design interviews.
