Pass the design round. Land the offer. A complete interview prep system for engineers targeting L4–L7 at FAANG-tier companies. 52 named questions, fully drilled. The Senior+ Playbook. Everything you need,...
A complete interview prep system for engineers targeting L4–L7 at FAANG-tier companies. 52 named questions, fully drilled. The Senior+ Playbook. Everything you need, nothing you don’t.
52 Named Questions · 10 Archetypes
52 questions. Pay once. Use forever.
The complete walkthrough library. Every named question that gets asked at Amazon, Google, Meta, Stripe, Uber, Netflix, and their tier — each one drilled the way an L5 or L6 engineer would answer it in the room.
52 full-length walkthroughs
52 printable drill cards (PDF)
6 framework cheatsheets
The Senior+ Playbook included
The 10 archetypes — 52 questions, 10 underlying patterns
Social Feed — 6 questions
Real-time Messaging — 6 questions
Marketplace & Matching — 6 questions
File Sync & Storage — 5 questions
Streaming Media — 5 questions
Search & Ranking — 6 questions
Counters & Rate Limits — 5 questions
Money Movement — 5 questions
Infrastructure & Platform — 6 questions
Specialized Systems — 2 questions
Sample walkthroughs in the Vault — 10 of 52 shown.
Question
Archetype
Level
Probe
Design a URL ShortenerAsked at: Twitter, TinyURL, Bitly
A guide for engineers who’ve done the prep and still aren’t landing offers. How interviewers actually score the design round. Scoping discipline. Reading the interviewer. The time management checkpoints. What changes at L4, L5, L6, and L7. The move that turns a Hire into a Strong Hire.
How it compares
Alternative
Cost
What it lacks
Mock interview (interviewing.io)
$225–300
Per session. No structured curriculum. No drill-card library. One session = one question.
Educative / Grokking SDI
$79/yr
No Senior vs Staff differentiation. No drill cards. Surface-level on most questions.
Exponent membership
$12–24/mo
Video-based. Doesn’t go deep on interview probes. No level-calibrated answers. No drill cards.
system design Primer (free)
$0
No named questions. No interview-calibrated answers. No drill cards. Great foundations resource, not a prep system.
FAQ
What level are the walkthroughs calibrated for? Every walkthrough covers L4 through L6+. Each one explicitly shows what the L4 answer looks like, where the L5 answer diverges, and what the L6 answer adds. The Senior vs Staff distinction is made concrete and specific — not just “go deeper.”
Is this the same as a mock interview or a course? No — it’s a reference library, not a live service. You get the full written answer for every named question, the one-page version for fast review, and the framework cheatsheets underneath them. No sessions, no scheduling.
What format are the files, and how do I get them? PDFs and docs in one ZIP. Register or sign in, complete the one-time purchase, and the download starts immediately.
