PayPal Interview Questions and Guide
Financial transaction consistency, idempotency, fraud detection pipelines, two-phase commits, and resilient payment rails.
The PayPal interview loop
- Recruiter screen
- Technical phone screen
- Onsite: 2 coding rounds, 1 payment architecture / system design, 1 hiring manager
PayPal interview questions
- Design a Distributed Rate Limiter
- Design a Payment System
- Design Cash App (P2P Payments)
- Design a Webhook Delivery System
- Zigzag Conversion
- Subarray Sum Equals K
- Nearest Exit from Entrance in Maze
- Number of Operations to Make Network Connected
- Coin Change
- Design an ATM
- Design a Digital Wallet
- Why do you want to work here?
- What is a weakness you're working on?
- Tell me about a time you made the case for paying down tech debt
- Why Bloomberg, and why financial technology?