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52 FAANG Questions Drill cards Cheatsheets Vault

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. A structured 6-week cohort....

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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. A structured 6-week cohort. Everything you need, nothing you don’t.

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.

The 10 archetypes — 52 questions, 10 underlying patterns

Sample walkthroughs in the Vault10 of 52 shown

QuestionArchetypeLevelProbe
Design a URL ShortenerAsked at: Twitter, TinyURL, BitlyInfrastructureL4–L6Distributed ID generation at scale
Design Stripe PaymentsAsked at: Stripe, PayPal, RobinhoodMoney MovementL5–L7Idempotency keys · double-entry ledger
Design Twitter TimelineAsked at: Twitter, Meta, LinkedInSocial FeedL4–L7Fanout-on-write vs fanout-on-read
Design Uber DispatchAsked at: Uber, Lyft, DoorDashMarketplaceL4–L7Geohashing vs quadtree · S2 geometry
Design WhatsAppAsked at: Meta, Apple, SlackMessagingL4–L7Delivery semantics · FLP impossibility
Design Netflix StreamingAsked at: Netflix, YouTube, SpotifyStreamingL4–L7Adaptive bitrate · CDN cold-start
Design Google Drive / DropboxAsked at: Google, Dropbox, AppleFile SyncL4–L7Delta sync · conflict resolution
Design a Rate LimiterAsked at: Cloudflare, Stripe, AWSCountersL4–L7Sliding window counter · Lua atomicity
Design Typeahead / AutocompleteAsked at: Google, Amazon, TwitterSearchL4–L7Trie with pre-computed top-K
Design a Distributed CacheAsked at: everywhereInfrastructureL4–L7Consistent hashing · thundering herd

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