Integrate Braintree with my App for Accepting Multiple Payment Types

I know that I included PayPal in the skill set needed to implement this project. It is a PayPal company called Braintree that uses similar practices to gather payment data from customers. The SDK's can be found here: https://www.braintreepayments.com. I need an out of the box working front-end with back-end implementation (plug-in) that uses my servers domain address to accept these payments. My server address is listed here:([login to view URL]). The website I listed above will hopefully answer most of the questions you may have. I want a Client SDK in iOS (Swift) && Server SDK Node.js. The only payments that I would like to verify are venom, PayPal, and credit cards. The website above gives the acceptance criteria on how to makes this possible. Please contact me over the phone for more information if interested in this project. It is the backend interaction with the front-end that is the most challenging (not very familiar with back-end coding yet).