CrackThePrep

Interview preparation for full-stack engineers.

Working notes, questions with hidden answers, and worked examples across the stack — JavaScript, React, Node.js, system design, DSA and behavioral. Free, no sign-up, built from years of real interview and delivery notes.

Start with the prep plan Jump into JavaScript AI Engineering roadmap

Full-Stack Interview Prep

JavaScript, React, Node.js, machine coding, system design, DSA and behavioral.

Prep PlanHow to prepare, what to prioritise, and a week-by-week roadmap.JavaScriptLanguage core — scope, closures, prototypes, the event loop, async, ES6+.notes + questions ReactRendering, hooks, state, performance and the patterns interviewers probe.notes + questions Node.jsRuntime model, modules, Express, middleware, auth and backend fundamentals.notes + questions Machine CodingPolyfills, utilities, async helpers and UI components — built live, step by step, the way the round is scored.System DesignA framework, the building blocks, and worked problems with diagrams.DSATheory, two dozen patterns, a curated interview-core list, a 450-problem checklist, and worked solutions.BehavioralThe STAR method and a bank of leadership and teamwork prompts.

AI Engineering Roadmap

GenAI & LLM engineering for working engineers — from advanced Python to production agents.

AI EngineeringGenAI & LLM engineering — Python for AI, prompts, RAG, agents, memory, voice, MCP, evals, guardrails. Theory, free resources and a build project in every chapter.notes + questions

Spot something wrong? Open an issue on theCrackThePrep repo.