Coinbase Interview Question Bank
Coinbase runs a long, gated pipeline — AI recruiter screen, a cognitive aptitude test, a culture/personality questionnaire, and a CodeSignal coding OA all precede the recruiter call, and team match still happens before the 4-round VO. Coding rounds bias toward multi-level CodeSignal-style problems (banking system, in-memory database, mining-block knapsack, crypto order management) over canonical LeetCode; bring your own scaffolding because interviewers often hand you a blank file with no class structure or tests. AI-assisted coding is now an explicit round on its own.
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Dependency-Aware Block Construction with Child Pays for ParentFast Transaction Selection for a Capacity-Limited BlockScheduled Payment Ledger with Account Lifecycle ManagementTask Management SystemCloud Compute Credits SystemMutable Leaderboard with K-th Highest ScoreMoving Average over a Sliding WindowMinimum Days to Execute Ordered Tasks with CooldownDesign a Banking System with Scheduled Payments and Account MergingCrypto Trading Order Management SystemBanking System Coding Exercise (Multi-Currency + History Replay Follow-ups)NFT Coding Exercise (Implement Core NFT Operations + Write Tests)Worker Salary Calculation (OA)Onsite Coding: Block Mining with Dependencies (Max Fee under Size Constraint)OA3: Flappy Bird Jump Boundary FunctionIn-Memory DB with per-key user lock: setByUser/deleteByUser/lock/unlockIn-Memory DB: Track per-key operation counts and return Top N keysFlappy-Bird-like Autopilot With Coins as Jump BudgetDrone Food Delivery With Charging Stations: Simulate Forward Nearest Station and Compute Total DistanceGenerate NFT attribute combinations with dedup and weighted random samplingParse and group log lines by thread id, then sort by timestampFood Delivery System DesignQuery PaginationIn-Memory DatabaseRender Blog Posts PageFilter and PaginationPagination ProblemMine block coding question交易费最大化Filter and Pagination Problem