Developer needed for creating a Ecwid crypto payment gateway plugin

The plugin should implement a payment gateway module. The merchant with the Ecwid plugin should be able to implement this plugin to allow his customers to pay with our payment gateway. Merchant user flow: 1. Install or upload plugin. 2. Configure it: specify his internal id(can be found in our system) and secret key(can be found in our system). Clients user flow: 1. At the checkout page, he should be able to choose our payment gateway as a preferred payment option. 2. After he pushed the "Pay" button he should be redirected to our platform. The redirect should be done as a GET HTTP request to our page with a set of parameters that will be specified once the development will start. How to add a payment method on ecwid [login to view URL] We also need a test environment so we can test new plugin