SYSTEM DESIGN INTERVIEW
System design interviews
need practice
Design systems on a live whiteboard while Alex probes every decision, challenges your tradeoffs, and scores your presentation.
Sign in with Google. Starts in seconds.
Pick the company, your level and a language. Alex picks problems to match.
System design problems from real interviews at Google, Meta, Amazon, Apple, and Microsoft. Calibrated to SDE-2, SDE-3 and Staff Engineer.
Reading system design blogs is not enough
Pick a problem and level, design on a whiteboard while Alex probes every decision, and walk out with a score.
InterviewSkool with AlexCost$9.99₹399 / $9.99 a sessionStartRight away, 45 minutesFeedbackA score out of 100 on requirements, design and deep divesPacks of 5 and 10 cost less per session. See all pricing
“The AI actually pushed back on my approach. Felt like a real technical debate.”
“It caught a bug I had missed twice myself. That alone was worth the session.”
“Felt like a real interview. Natural conversation, not a form to fill in.”
Pay per session
Every plan gets you the same interview: coding or system design with Alex, our AI interviewer, a report that scores you on 12 skills, and questions picked for the company you want.
Practice at your own pace. It's free.
System design case studies from real interviews in the last 6 months. No card, no trial timer. Just start.
System Design
176 case studies·30 companies·31 topics·~5 min average read
Sourced from real interviews
Problems asked at these companies in the last 6 months
FAQ
Common questions
What system design problems do you have?
URL shortener, chat system, news feed, payment system, video streaming, and more. Problems sourced from real interviews at FAANG companies.
What levels are supported?
SDE-2 (mid-level), SDE-3 (senior), and Staff Engineer. Alex calibrates the depth of follow-ups based on your target level.
How is the interview scored?
Scored 0 to 100 across requirements, architecture, deep dives, and communication. You get per parameter feedback and level readiness.
Is there anything I can practice for free?
Yes. You can run one complete demo interview for free, and browse 176 system design case studies plus 433 company-tagged DSA problems with full solutions, hints, and diagrams at no cost. Nothing in the practice library is locked.
Ready to get grilled?
Just you, Alex, and a whiteboard.
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Full sessions start at $9.99₹399 / $9.99 each. See all pricing