Developer Needed to modify open source code

We’re looking to modify the open source code in the below link.
Modifications Needed.
1. Branded with our logo and colors.
2. To have resellers/subgroups
3. This software is for a bitcoin atm.
Meaning that customers put in cash through a bill accepter and buys bitcoin.
WE WANT TO CHANGE THIS TO NO ATM MACHINE. WHERE WE PLACE JUST A TABLET/IPAD IN A STORE. SO INSTEAD OF THE CUSTOMER FEEDING CASH INTO THE MACHINE..THEY WOULD HAND THE CASH TO A STORE CLERK AND THE CLERK WOULD ENTER A CODE INTO THE TABLET/IPAD TO TRANSFER THE BITCOIN.
4. To use ONFIDO Id verification api
5. To use the Kraken crypto exchange api.
Please take a good look here at the GitHub link here to the software to be modified.
https://github.com/lamassu/lamassu-machine