Big Tech SWE Interview Prep
Everything you need to walk in ready.
Coding patterns, structured system design deep-dives, behavioral frameworks, and an interactive mock-interview simulator — with tools you won't find in a static PDF.
Today's Challenge · Wednesday, September 2
Same three prompts for everyone today — come back tomorrow for new ones.
Coding Interviews
Patterns (not just problems): two pointers, sliding window, DP, graphs, heaps, backtracking, tries — with signals for recognizing each and common pitfalls.
Explore →System Design
Deep-dive component library (load balancers, caching, sharding, consensus...) plus fully worked case studies: URL shortener, Twitter, Uber, WhatsApp, and more.
Explore →Behavioral Interviews
The STAR framework, a categorized question bank mapped to Amazon's Leadership Principles, and the most common mistakes to avoid.
Explore →CS Fundamentals
Condensed checklist of core theory: complexity analysis, operating systems, networking, databases, and data structures — the foundations interviewers assume you know.
Explore →Timed Mock Interviews
Pick a track, get a random question, race a countdown timer, write your answer/notes, self-rate your performance, and build a history.
Explore →Spaced-Repetition Flashcards
A tiny SM-2-style scheduler quizzes you on system design gotchas, pattern signals, and behavioral framing right when you're about to forget them.
Explore →Architecture Sketch Canvas
Drag components onto a canvas and literally sketch your system design answer — the way you'd actually draw it on a whiteboard.
Explore →