Payment systems experts required

Looking for a payment expert who will assist with development of a white label payment gateway solution with Unipay; https://unipaygateway.com/pricing/hosted-means-low-cost-and-few-hassles/

And will be able to integrate the billing software Gentrack; https://help.gentrack.com/integration-services/apis/ so that the users can use their local bank cards to do transaction in our payment gateway and payment aggregator.

It would be a bonus to hire someone who has worked on a similar project before with Unipay and Gentrack billing system.