Multi-market wallet app

The challenge

One codebase surface for payments, P2P transfers and balances across markets — with biometric lock, clear money states, and snappy UI on mid-tier Android as well as flagship iOS.

How we approach it

Swift and Kotlin clients over a modular Node service layer. Offline-first transaction queue, feature-flagged market rollouts, and a design system that makes money actions impossible to mis-tap.

What good looks like

• Interaction budget: P95 under 400ms on reference mid-tier devices
• Biometric auth + secure enclave / Keystore for session and signing flows
• Market launch path behind flags — ship once, open region by region