NewBehavioral round rejections are up ~15× as rounds shifted to include design follow-ups. Behavioral Interview Prep built on CRAFT, our depth-first answer framework. Live now for Pro & Lifetime. Learn more →
Built by senior FAANG ML engineers
Crack ML System Design + Behavioral Demystified & FAANG-Proven
The two rounds that decide most ML offers, in one place. 24 staff+ ML system design questions with full walkthroughs and follow-ups, plus 23 behavioral answers in our CRAFT framework with 2 design follow-ups each for the new light-design behavioral format. Written by senior ML engineers who have worked at FAANG companies and passed these interview loops themselves.
24
ML System Design Questions
23
Behavioral CRAFT Answers
46
Design Follow-Ups
Staff+
Depth Level
Not Another AI-Generated Prep Resource
Every ML system design walkthrough and every behavioral answer is written by senior ML engineers with FAANG experience who have been through these interview loops themselves at multiple top companies.
Written by Senior FAANG Engineers
Our content authors are senior ML engineers with FAANG experience and a deep understanding of how these interview loops are structured, what gets scored, and what separates "hire" from "strong hire."
Staff+ Depth
All answers are written at staff+ depth, the highest bar. Whether you're a new grad or a senior engineer, studying at this depth means you'll exceed expectations at any level.
Continuously Updated
Interview trends change. We update content monthly to reflect what top AI companies are currently asking, so you never study outdated material.
How to Prepare
Learn the Frameworks
The ML system design framework, plus CRAFT for behavioral. Both free, no signup.
Study Walkthroughs
Fully annotated staff+ examples for both rounds, showing what great answers look like.
Practice Both Banks
24 ML system design questions plus 23 behavioral CRAFT answers with 46 design follow-ups.
Get Expert Feedback
Book a live mock with a senior FAANG ML engineer for personalized calibration.
Simple Pricing, Start in Minutes
Full access to all staff+ content across both tracks. Choose 6 months or lifetime.
Pro
Full access for 6 months
- 24 staff+ level questions with full walkthroughs
- 72 follow-up Q&As to test your depth
- Behavioral prep with CRAFT — our depth-first answer frameworkNew
- Framework guide for structuring answers
- Guided walkthroughs with annotations
- Progress tracking
- Cancel anytime
Lifetime
Everything, forever
- Everything in Pro
- Behavioral prep with CRAFT — early access (live now)New
- Lifetime access — no renewal needed
- All future questions and updates
- Priority access to new content
Practice with Senior FAANG Engineers
Not career coaches. Not bootcamp instructors. Senior ML engineers with FAANG experience who have passed these interview loops themselves at multiple top companies.
Live Mock Interview Package
$899 / 2 sessions
Two 45-60 min mock interviews with written feedback within 24 hours.
- Session 1: Diagnostic, identify gaps
- Session 2: Validation, readiness check
- Written feedback with action items
- Calibrated to your target company & level
Ready to Start Preparing?
Try our free staff+ ML system design walkthrough, or read the behavioral guide. No signup required for either.