A standalone, headless payment step for the Evermos platform. The host app hands it a signed token, and it owns the journey from there: order confirmation, payment instructions, real-time status and proof-of-payment upload.
Role
Frontend engineer
Context
Evermos
Stack
Nuxt 3, Vue 3, XState, SCSS
Overview
The flow had to be embeddable anywhere and configured at runtime, so it runs on a token-driven contract with a state machine keeping each step explicit — including the awkward ones, like a bank transfer that has not been confirmed yet.
Payment methods come and go, so every step sits behind a runtime feature flag: the team can enable a method or switch one off in production without a redeploy.
Key achievements
Token-driven, embeddable checkout with no session dependency
XState state machine for explicit, testable payment steps
Real-time payment status, bank-transfer forms and receipt upload
Runtime feature flags per payment method — no redeploy to toggle
