Pos Terminal Development Jobs

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Fixed-Price - Expert ($$$) - Est. Budget: $5,000 - Posted
I am looking for a developer that has experience building mobile applications that interface with point-of-sale systems like verifone. The developer should have an understanding of the general workflow of payment processing and how the point-of-sale systems work. The developer should also have an understanding of how to create "updates" for these terminals. Experience with NFC is also highly desirable. Once you respond to this posting I will contact you to obtain your skype ID so we can discuss the project further and setup an interview.
Skills: POS Terminal Development Android App Development iOS Development
Fixed-Price - Entry Level ($) - Est. Budget: $150 - Posted
Hello. We use an online booking and payments system called Spawtz. An API exists to allow POS programs to get details of what users need to pay, and to record those payments. (PLEASE SEE ATTACHED DOCUMENT) We require someone to integrate this with Unicenta POS so that as payments are put through POS they are recorded on the booking system. An example of the code that Unicenta needs to GET data from the API is as follows: LineItem {​ Amount (Decimal), Description (String), DateTime (DateTime), DueDate (DateTime), Type (String), Id (Int32), Uri (String) }​ And the code to POST to the API is as follows: Payment {​ Amount (Decimal), CreatedByUserId (Int32), LineItems (array[LineItem]), Description (String), DateTime (DateTime), Type (String), Id (Int32), Uri (String) }​ We need someone to be able to write an integration for Unicenta that does that. Is anyone able to help please?
Skills: POS Terminal Development JavaScript json