Coinbase Interview Questions
Master your tech interview with our curated database of real questions from top companies.
Diagnose Discrepancy in A/B Test Conversion Rate Results
A/B Test Design: Personalized Marketing Emails and Conversion Lift Scenario An e-commerce firm wants to send personalized marketing emails to increase...
How to Analyze and Model Behavioral Data Effectively?
End-to-End Conversion Modeling on a Raw Behavioral Dataset Scenario You receive a raw, event-level behavioral dataset (e.g., user actions, sessions, m...
Estimate Super Bowl QR Code Scan Rate Using Historical Data
Estimating QR Scan and Sign-up Conversion for a Super Bowl TV Ad Scenario A Super Bowl TV ad prominently features a QR code and a clear call-to-action...
Design account system with cashback
System Design: Account Management with Transfers, Payments, and Cashback You are to design and implement an in-memory account management service that ...
Solve Aptitude Test: Logical, Numerical, Verbal Reasoning
Scenario Pre-employment aptitude screen assessing logical, numerical and verbal reasoning within a strict time limit Question You have 15 minutes to s...
Design cloud storage system
In-Memory Cloud Storage: Design and Implement You are asked to design and implement an in-memory cloud storage system that maintains a mapping from fi...
Calculate Adoption and Transaction Rates, Identify Cross-Region Sales
user_txn +---------+-------------+------------+---------------+------------------+---------------------+ | user_id | user_region | adopted_at | transa...
Analyze Factors Behind 20% Retail Revenue Decline
Retail Revenue Decline Analysis Scenario A retailer reports a 20% decline in revenue compared with a prior, comparable period. Assume revenue is net o...
Investigate Anomalies in Coinbase Wallet Engagement Metrics
Coinbase Wallet: Anomaly Investigation Framing Context You observe an unexpected spike or drop in a key Coinbase Wallet metric (e.g., DAU, transaction...
Calculate Probability of Wallet Linking Among Users
Wallet Linking Probability Scenario - There are n users on a platform. - Each user independently links their wallet with probability p (0 ≤ p ≤ 1). - ...
Estimate Successful Sign-ups from Super Bowl QR Code Ad
Estimating Sign-ups from a Super Bowl QR Code Ad Background A cryptocurrency company airs a national Super Bowl commercial featuring a bouncing QR cod...
Diagnose Revenue Decline: Key Analyses and Metrics
Diagnose a Sudden Revenue Drop Scenario A consumer fintech/trading platform (e.g., mobile/web app with transaction-fee revenue) experiences a noticeab...
Calculate Cumulative Sum for Each Integer in Table
numbers +-----+ | num | +-----+ | 1 | | 2 | | 13 | | 14 | | 15 | +-----+ Scenario You have a table containing one integer per row; for each row...
Evaluate Integrity in Workplace Culture Through HR Screening
Workplace Culture & Integrity Survey (HR Screening) Context You are completing an HR screening as part of a Data Scientist take‑home project applicati...
Investigate Super Bowl Ad Impact on User Sign-Ups and Revenue
Estimating QR-Driven Sign-ups and Diagnosing a 20% MoM Retail Revenue Decline Scenario A crypto company runs a Super Bowl commercial featuring a QR co...
Design crypto trading system
System Design: Crypto Trading Gateway via Logically Asynchronous, Synchronous APIs Context You are designing a trading gateway that brokers client ord...
Calculate Expected Users Linking Coinbase Wallets
Coinbase Wallet Linking: Bernoulli/Binomial Setup Scenario You have n users, each independently asked to link a Coinbase wallet. Each user links with ...
Solve restaurant path and order event tasks
You are given two independent coding tasks. Task 1: Shortest paths in a restaurant grid Context: A restaurant is represented as a 2D grid. The waiter ...
Describe cross-team collaboration on past projects
In a behavioral interview with an engineering manager, you are asked to discuss your previous project experience, with a particular focus on cross-tea...
Design a blob storage system for lunar environment
You are asked to design a blob storage system deployed on a lunar base. The interviewer is intentionally making the environment unusual (the Moon) to ...