Backend Engineer

Backend Engineer is a free, visual-first library for learning backend engineering and system design. Instead of walls of text, it teaches through interactive diagrams, a drag-and-drop System Design Canvas that simulates real load and bottlenecks, and case studies sourced directly from how Discord, Netflix, Stripe, and Uber actually scaled their systems. Built for junior-to-mid engineers and anyone prepping for system design interviews - no paywall, no signup wall.