Paypal Data Scientist ML System Design Interview Questions

Master your tech interview with our curated database of real questions from top companies.

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Daily Quest

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PayPal

Hard

Data Scientist

Detect credit-card transaction fraud

Credit-Card Fraud Detection: Decisions and System Design Context You are designing a real-time decisioning system for card transactions with strict la...

Design fraud detection from raw transactions

System Design: End-to-End Transaction Fraud Detection Context You are given a large, multi-table dataset of transactions and customer/merchant metadat...

ML System Design

Jul 31, 2025