Banks and card networks don’t buy interfaces. They buy infrastructure, and the interface is where that infrastructure becomes usable - by risk teams, ops analysts, onboarding managers, and merchants who never see the machinery underneath.

At Juspay, I’ve worked across this layer: authentication and 3DS flows, tokenization, fraud tooling, merchant lifecycle systems, and developer surfaces built to a partner bank’s brand rather than our own.

The constraints here are unusual. Scheme mandates and regional regulation set the boundaries before a single frame exists. Legacy systems carry decades of accumulated logic that can’t simply be redesigned away. And the work is often white-labelled, which means the design has to be opinionated about structure while staying silent about style. The projects below are about finding clarity inside those constraints.