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ScaleDojo
Interactive platform for practicing system design interviews with AI feedback
$24.99/yrStarting price
28KMonthly visits
24Popularity
About ScaleDojo
ScaleDojo provides an interactive environment for engineers to practice system design interviews through hands-on challenges. Users work on real-world scenarios such as designing URL shorteners, distributed message queues, or notification systems using a drag-and-drop canvas with cloud components like load balancers, databases, and caches. The platform covers multiple domains including high-level design (HLD), low-level design (LLD), API design, algorithm practice, SQL schema design, and GenAI systems. Each challenge is scored by AI with detailed feedback on architectural decisions, trade-offs, and potential improvements. A chaos engineering simulator called Murphy’s Lab allows users to test system resilience by injecting failures like server crashes or traffic spikes and observing real-time metrics such as latency, throughput, and error rates. The platform also offers learning paths for fundamentals in HLD, algorithms, LLD, API design, and AI engineering, with each chapter culminating in practical lab exercises. Users can earn verifiable certificates and track progress on a global leaderboard.
Key features
- High-level system architecture challenges
- Low-level database schema design with SQL practice
- API endpoint engineering with REST, GraphQL, gRPC
- GenAI and AI lab for LLM pipelines and RAG systems
- Algorithm lab for data structures and Python fundamentals
- Chaos engineering simulator for fault tolerance testing
- Mock interview arena with AI interviewer
- Personalized AI roadmap for structured learning
Use cases
- Preparing for system design interviews at top tech companies
- Practicing real-world architecture trade-offs before implementation
- Testing system resilience with failure scenario simulations
Pros
- AI-powered feedback on every design submission
- Interactive drag-and-drop canvas with 40+ cloud components
- Chaos engineering simulator for testing system resilience
- Covers HLD, LLD, API design, algorithms, SQL, and GenAI systems
- Verifiable certificates and global leaderboard for progress tracking
Cons
- No free tier beyond limited credits
- Requires credits for most advanced features
- Pricing in USD and INR only
- No mobile app; desktop browser-based
Frequently asked questions about ScaleDojo
What is ScaleDojo?
ScaleDojo is an interactive platform for practicing system design, software architecture, API design, database schema design, generative AI pipelines, and ML algorithms through hands-on challenges and real-world scenarios.
Who is ScaleDojo for?
The platform is designed for engineers preparing for system design interviews, software architects, developers, and anyone looking to improve their skills in designing distributed systems, APIs, databases, and AI pipelines.
How does ScaleDojo provide feedback on designs?
ScaleDojo uses a deterministic scoring engine and an instant AI architect review to evaluate designs across metrics like latency, system cost, safety compliance, and functional correctness, offering detailed feedback and optimization advice.
Does ScaleDojo offer learning paths?
Yes, ScaleDojo provides structured learning paths covering fundamentals in high-level design, algorithms, low-level design, API design, and AI engineering, with each chapter culminating in practical lab exercises.
Can I practice with real-world system design challenges?
Yes, ScaleDojo includes challenges based on real systems like URL shorteners, distributed message queues, rate limiters, and notification systems, allowing users to build and test architectures on a drag-and-drop canvas.
Is there a free trial available?
ScaleDojo offers a free tier where users can start their first challenge without providing a credit card, allowing them to build their first architecture in minutes.
ScaleDojo traffic & engagement
scaledojo.dev · third-party estimates from Similarweb
Data as of Sep 2026Full AI website ranking →
Monthly visits · Sep 20260+166.7% MoM12-month high 28K (Sep 2026)
Rank among AI websites#3,141▲ 1071 vs last monthof 8,384 tools on Aitoolnavio
Top marketIndia77.5%Top 3 countries bring 100% of visits
Average visit0sLonger than 89% of AI sites
Pages per visit0More than 87% of AI sites
Bounce rate0%Lower than 60% of AI sites
Similarweb global rank#764,939#58,042 in India
Traffic trend
Last 4 months · grows by one month every month
- Jun 20261.7K
- Jul 202611K+565.9%
- Aug 202610K−5.8%
- Sep 202628K+166.7%
Where visitors come from
Share of visits by channel
No measurable traffic from Social, Paid Referrals or Search.
Top countries
Share of visits · estimated visits
Visits sent by AI assistants
How people reach this site from other AI tools
2.3K a month · 8.2% of all visits
Compared with similar tools
Lifestyle & Education · Sep 2026
Traffic figures are third-party estimates, good for scale and trends; they can differ from a company's own numbers. Updated monthly.
