Design a Digital Wallet

Build the core of a digital wallet, the kind a payments app runs on. People hold money, load it from a bank or a card, pay each other and take it out again, and every movement is recorded on a statement. A request that is retried must never move money twice.

How the round runs

Medium · 5 stages · 5 questions · 60 min

~6 min

Requirements Gathering

lists

~3 min

Identifying Core Entities

cards

~14 min

Designing Classes & Relationships

diagram

~28 min

Code Implementation

code

~9 min

Deep Dives

code

Set up your round

Level

Interviewer

Duration

Junior · Standard · 60 min