Build a foundation that lasts.
Structured deep-dives into software engineering fundamentals. Not tutorials — complete guides with diagrams, real-world analogies, and production-grade code examples.
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Each course is a complete, self-contained deep-dive.
Design Patterns
Gang of Four — all 22 patterns
Master the 22 classic GoF design patterns across three categories: Creational, Structural, and Behavioral. Each pattern is explained with a real-world analogy, UML-style diagram, and a full TypeScript example.
Data Structures
Arrays, trees, graphs, heaps
A visual guide to fundamental data structures — when to use each, how they perform, and TypeScript implementations from scratch.
System Design
Scaling, caching, queues, consistency
How large-scale systems are designed — load balancing, database replication, message queues, and distributed consensus explained with real architecture examples.