DevNinja · Interview preparation
Interview Prep
Prepare for coding, system design, and AI interviews the way hiring loops actually score you — expected answers, level bars, follow-ups, and production-ready diagrams.
Start here
Three paths. Pick the one that matches your next interview.
Learn the scoring lens
Why interviewers ask, what they evaluate, and the answer structure to hit every time.
Open playbook → 02Practice Interview Labs
55 FAANG-frequency prompts across coding, system design, and AI with deep solutions.
Browse labs → 03Target a company
Google, Amazon, Meta, Microsoft, Netflix, Uber, and AI platform interview patterns.
Company guides →Interview Labs
Expandable questions with interviewer intent, Junior→Principal expectations, and production examples.
Coding Interview Lab
Two Sum to Alien Dictionary — patterns, diagrams, complexity talk tracks, and common mistakes.
Practice coding →System Design Lab
URL shortener through payments, crawlers, and Kafka — whiteboard flows and failure modes.
Practice design →AI Interview Lab
RAG, agents, serving, eval, and security — scored the way AI hiring loops score.
Practice AI →Guides & roadmaps
Structured preparation — comparisons, behavioral, revision, and role-based paths.
Knowledge tracks
Deep topic pages with code, diagrams, and interview drills.
Browse all topics
Every guide and chapter — searchable HTML pages, not PDF screenshots.
Architecture diagrams
Whiteboard-ready figures for request flows, components, and algorithms.
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Interview Prep is part of the DevNinja engineering ecosystem.