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University sports and international education·2026·USP · University Sports Program
2
payment gateways integrated

The payments backend behind every proposal and programme

A Node and Express API deployed on Railway, with Stripe and Helcim endpoints for charging proposals and programmes.

BackendPayment integrationsAPI

The challenge

Charging clients in different countries, with different currencies and preferred methods, is not solved by a single gateway. And putting payment logic in the frontend would have exposed the keys.

What we did

We built a dedicated API in Node and Express on Railway, with endpoints for both gateways. The frontend never sees a key: it requests the charge, the backend executes it. Two gateways means picking the right one per market and currency.

Measurable results

2
Gateways
Stripe and Helcim by market
0
Keys in the browser
All logic server-side

Services applied in this project

Stack used

  • Node.js
  • Express
  • Railway
  • Stripe
  • Helcim

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