Designing a fraud investigation interface from 0→1

Visa Protect helps financial institutions fight account-to-account fraud through real-time insights and unified fraud scoring. However, Visa’s design system wasn’t built for visualizing dense transaction data. I led the 0→1 design of the main graph interface, from defining requirements to establishing a scalable visual language with engineering.

role: First Product Designer
timeline: Jan – June 2025
team: 1 PM, 2 Data Engineers

impact

$73M
New fraud
value surfaced
40%
Drop in false-
positive alerts
Weeks → Days
Length of average
investigation time

Reflection

What I learned designing a technical product

Scope is a design decision

Expert users want tedious work to disappear. I focused on designing a few features well, and consulting content, data viz, and accessibility partners to make each one best-in-class.

Become your (expert) user

Dogfooding the product is key to understanding a technical product. I used the live product with demo data, and worked closely with engineering to ensure QA matched the designs.