Design a Payment System
A payment platform: merchants charge customers' cards through you, money moves at the card network and settles days later, and you must never lose a payment, duplicate one, or lose track of whose money you are holding.
How the round runs
Hard · 5 stages · 11 questions · 60 min
~4 min
Requirements Gathering
lists
~4 min
API Design
api rows
~26 min
High-Level Design
whiteboard
~4 min
Database Design
schema
~22 min
Deep Dives
whiteboard
Set up your round
Level
Interviewer
Duration
Mid-Level · Standard · 60 min