Industry-led coding courses built for developers who want real-world skills. From algorithms to full-stack architecture — learn what actually matters.
Master closures, async/await, the event loop, and modern ES2024+ features that power real applications.
Crack FAANG interviews with 200+ problems, pattern recognition, and complexity analysis techniques.
Build production apps with Server Components, streaming, advanced state management, and performance optimization.
Design scalable backend systems with REST APIs, message queues, Docker, and CI/CD pipelines.
Go beyond basic types. Generics, conditional types, decorators, and building type-safe libraries.
Design Instagram, Uber, and YouTube from scratch. Learn sharding, caching, load balancing, and CAP theorem.
New challenges every day. Earn bonus XP. Build your streak.
Ask questions, share solutions, help others
Top coders ranked by XP
Your learning progress
We don't teach theory. Every lesson maps to real interview problems, production code, and industry standards that actually get you hired.
Every topic mapped to what FAANG and top startups actually test. No fluff, pure signal.
Code directly in your browser with our in-platform IDE. Tests run instantly, feedback is immediate.
Book sessions with senior engineers from Google, Meta, and Netflix. Real code reviews, real feedback.
Blockchain-verified credentials that employers can check instantly. Stand out from the crowd.
Our instructors have built products used by millions and interviewed hundreds of candidates at top tech companies.
10+ years in distributed systems. Built infrastructure serving 200M+ users. Specializes in algorithms and system design interview prep.
TypeScript core contributor. Expert in React performance, compiler internals, and frontend architecture patterns at massive scale.
Architect of Netflix's recommendation engine. Passionate about clean code, mentoring junior developers, and DSA mastery.
AWS architecture specialist. Built serverless platforms processing 10M+ events/day. Loves teaching cloud-native development.
YC W22 founder, previously at Stripe. Expert in payment systems, API design, and scaling startups from 0 to 1M users.
ML researcher turned educator. Makes complex ML concepts approachable through Python, math fundamentals, and hands-on projects.
Walk through designing a social media platform from scratch — databases, caching, CDNs, and handling 500M+ daily active users with Walter Anderson.
Solve 3 hard-level problems in real time with Brandon Doe. See a senior engineer's thinking process live — from brute force to optimal.
Explore the full mental model shift with Server Components, Suspense boundaries, and the new concurrent features in React 19.
Watch real mock interview sessions with feedback. See exactly what senior interviewers look for and common mistakes to avoid.
No subscription traps. Cancel anytime. Every plan includes a 14-day money-back guarantee.
Perfect for getting started and exploring the platform.
Everything you need to land your next engineering role.
For teams and organizations scaling engineering skills.
Questions about courses, mentorship, or enterprise plans? We respond within a few hours.
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