SystemCraft gives you structured learning, AI-powered practice, and the depth you need to confidently design systems at top tech companies.
The Craft Suite
Each Craft product laser-focuses on one domain of the software engineering interview — so you go deep, not broad.
System Design
Master distributed systems, databases, caching, networking, and real-world architecture patterns used at top tech companies — with AI-powered practice at every step.
Data Structures & Algorithms
Structured practice on arrays, trees, graphs, dynamic programming, and more — mapped to real interview formats.
Low-Level Design
Learn object-oriented design, SOLID principles, design patterns, and class diagram composition — practiced through realistic design exercises.
How It Works
SystemCraft is built on the science of spaced repetition and active recall — the most effective techniques for retaining complex technical knowledge.
Read concise Snack articles (free) that give you the essential mental model, or unlock Dive deep-dives (premium) for the full 20-minute expert treatment — including trade-offs, failure modes, and real-world examples from systems like Cassandra, Kafka, and Redis.
After each article, an AI-powered recall quiz is generated specifically for what you just read. Questions are calibrated to probe your understanding — not surface-level definitions, but why certain design choices matter and when to apply them.
Get instant AI feedback on your answers with detailed explanations. Track your progress across topics, identify knowledge gaps, and build streaks that reinforce consistent practice — so you walk into your interview genuinely prepared.
Features
Built for engineers who want to go beyond surface-level prep and genuinely master the concepts.
Every article comes with an AI-generated quiz, auto-graded with instant feedback. Practice exactly what you read, exactly when you need it.
20-minute expert write-ups on real system design topics — caching, databases, messaging queues, CDNs, and more. Written by engineers, for engineers.
Streaks, topic completion stats, and personalized recommendations surface what you should study next based on where your knowledge gaps actually are.
Built from day one to sync your progress across devices, so you can study during your commute or at your desk.
Topics covering the full breadth of system design: distributed consensus, replication strategies, load balancing, observability, microservices, and more.
Questions are contextually generated per article, graded with nuanced feedback, and summarized at session end to reinforce learning.
Pricing
Start free, upgrade when you're ready to go all-in on your interview preparation.
Free
Everything you need to start learning system design — no credit card required.
Monthly
$7.99 / month
Billed monthly. Cancel anytime.
Full access to everything — ideal for engineers actively interviewing.
Annual
$59.99 / year
Just $5/month — save 37% vs. monthly.
The same full access as monthly — at a better value for a longer runway.