AI Mock System Design Interview Master Interviews Before the Real One
Practice with realistic AI mock system design interviews. Get instant feedback on architecture decisions, learn from mistakes, and ace your next interview at FAANG and top tech companies.
Why Do Smart Engineers Fail System Design Interviews?
It's not about lacking technical knowledge—it's about interview execution
Panic Under Pressure
You know the concepts but freeze during the 45-minute window
No Structure
Jump straight to code without gathering requirements or discussing trade-offs
No Real Practice
$200 mock interviews don't replicate the real pressure and constraints
Vague Feedback
Generic advice like "think out loud" doesn't help you improve
See How It Works
Experience a realistic system design interview simulation
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Everything You Need to Master System Design
Built for engineers who want to pass their interviews on the first try
Realistic Pressure
45-minute timed sessions with an AI interviewer that interrupts, challenges, and applies real interview pressure.
Smart Signal Tracking
Monitors if you covered requirements, discussed scale, proposed APIs, and identified trade-offs in real-time.
Actionable Feedback
Detailed performance breakdown across multiple dimensions. Know exactly what you missed and how to improve.
Multiple Practice Cases
Practice with curated cases based on real FAANG interviews. URL shortener, social feeds, streaming, and more.
Whiteboard Integration
Visual diagram editor to draw architecture diagrams during the interview. Export and review them later.
Progress Tracking
Dashboard with all past interviews. See your improvement over time and review transcripts and diagrams.
Start Free, Upgrade When Ready
Choose the plan that works for you. All credits never expire.
Starter Pack
$3 per interview
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3 interview simulations -
AI-powered interviewer -
Real-time feedback -
Detailed performance report -
Credits never expire
Power Pack
$2.40 per interview
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5 interview simulations -
AI-powered interviewer -
Real-time feedback -
Detailed performance report -
Credits never expire -
Best value per interview
Pro Unlimited
/month
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Unlimited interviews -
AI-powered interviewer -
Real-time feedback -
Detailed performance reports -
Cancel anytime -
Perfect for intensive prep
Frequently Asked Questions
Everything you need to know about the platform
Our AI is trained on real system design interviews. It follows the same phase structure, asks follow-up questions, and applies time pressure just like a real interviewer. Many users report that it feels more realistic than expensive mock interview services.
Ready to Ace Your Next Interview?
Join thousands of engineers preparing for their dream roles at top tech companies