Build your judgment, improve reasoning, and learn scalable architecture the way real engineers do: by designing, breaking, improving, and understanding systems— with AI guiding you through every decision.
Our platform combines cutting-edge AI with practical tools to make system design accessible and efficient.
Receive carefully crafted prompts, counter-questions, and critiques designed to push your thinking — not just generate answers.
Drag, drop, and connect components to build real-world architectures while instantly seeing improvement suggestions.
Work on beginner to advanced problems, architecture breakdowns, scalability exercises, and real system case studies.
Follow guided templates and mental models to structure responses clearly — perfect for FAANG-style interviews.
Get factual insights powered by curated system design knowledge, not generic or outdated internet content.
Configure storage, caching, APIs, load balancers, queues, consistency models, and more — just like production engineers.
From concept to implementation in four simple steps.
Start with requirements and constraints — the foundation of all real system design thinking.
Use the editor to map architecture, choose technologies, and explore trade-offs interactively.
Receive structured feedback, alternative approaches, scalability insights, and improvement suggestions.
Solve new problems, refine your thought process, acquired new skills and develop confidence to build at any scale.
Start learning the way real architects grow — by solving meaningful problems, visualizing ideas, and improving through feedback and iteration.
Start Your JourneySystem Design Problems
Practice & Mock Interview
Real-time Evaluation & Feedback
Join thousands learning system design with confidence
Alex Chen
Software Engineer at Google
Sarah Patel
Senior Architect at Meta
James Wilson
DevOps Lead at Amazon
We offer 66+ curated system design problems ranging from easy to hard difficulty levels. New problems are added regularly.
Practice mode lets you answer pre-defined questions at your own pace. Mock Interview mode simulates a real interview with live AI asking follow-up questions based on your responses.
Each attempt at a problem (either mode) consumes one credit. Mock interview credits and practice credits are separate. Free users get 1 of each per month.
Yes! Visit your dashboard to view all past submissions with evaluations, scores, and AI feedback.
Credits are non-refundable but never expire during your subscription. Contact support for special cases.
Yes! Contact our sales team for custom enterprise pricing and team management features.
Join engineers from top companies learning and mastering system design.