I have an ecommerce website that is built on the Groovy/Grails stack. It is bespoke, which basically means that it does not use an ecommerce platform as a backend to my understanding.
I need a payment solution named Zippay to be integrated into the website. I have the necessary API docs, github repo (for the SDK), and asset files (for the checkout UI). I can provide these to potential freelancers who may be able to take upon this task.
The API takes a lot of methodology from the Stripe API and the SDK's work similarly to the Stripe SDKs in that there are basic getters and setters and then API requests. So if you are very familiar with programmatic Stripe integrations, this shouldn't be too far off, however it is a new API so there is not much resources available, however I will be able to provide as much detail as I can.