Coding Interview Cheat Sheet
The 17 core patterns with the trigger phrases that signal each one, plus a full Big-O reference. Searchable.
Open → System designSystem Design Cheat Sheet
A live back-of-the-envelope capacity calculator, latency numbers to memorize, and a filterable component reference.
Open → CodingBig-O Complexity Visualizer
Drag the input size and watch O(1) through O(n!) pull apart, with a complexity comparison table.
Open → Question bankFAANG Question Bank
Real coding, system-design, and behavioral questions for Amazon, Google, Meta, Apple, Microsoft, Netflix and Nvidia — filter by company and type.
Open → BehavioralSTAR Method Story Builder
Fill in Situation, Task, Action, Result and get a tight, copy-ready behavioral answer. Includes the 10 most common questions.
Open → OfferSalary & Total Comp Calculator
See your real total compensation — Year 1, steady-state, and total over vesting — plus three negotiation scripts.
Open → QuestionsInterview Questions from a Job Description
Paste a job description and get the likely interview questions — role, skills, behavioral and situational — each with what it tests. Runs in your browser.
Open → Behavioral"Tell Me About Yourself" Answer Builder
Fill in your role, strengths and wins and get three Present–Past–Future answers sized to 30, 60 or 90 seconds, with speaking time.
Open → PlanInterview Readiness Quiz
Score your readiness across coding, system design, behavioral, and logistics — and get a personalized focus list.
Open →And when the real round starts…
CoPilot Interview is a desktop AI assistant that helps you live — real-time coding, system-design, and behavioral support during the actual interview, plus an Interviewer Mode to practice against. Permanent free tier, no credit card.
See how it works