Sam at Zoo Studios had a requirement to integrate a WooCommerce site they were building with a payment gateway that didn't have an existing payment plugin available.
The gateway was an off-site payment system where transaction information was passed across to the payment provider, the user would complete the payment, and then be redirected back to the store.
We worked with Sam to validate the provider's API documentation, build the gateway implementation including working through test mode with the provider to test the implementation, and then transition the gateway into live service.
The plugin included user-interfaces for managing the gateway credentials, and settings, and was developed making use of all of WooCommerce's standard payment gateway APIs. We delivered as a standard plugin to be installed alongside WooCommerce.