Need a Sign Up and Login Authentication for React.js Web Site -- 2

My user interface needs a sign-up register process for new members and customers. Then we must have a login screen and page authentication for current customers. I want my UI homepage protected making login required. Customers must be able to pay for a membership. We could use pay pal or some existing payment system. No need to make it by scratch. Just the login and sign up and authentication is automatedand custom. Must have JavaScript experience with angular and react and ember and express and node web server. My site uses react and redux on front end. On backend node and express. I prefer this system to be done in JavaScript to be compatible with my site code. My user interface web site is isomorphic JavaScript meaning my code is shared on front end and back end with same code. It renders server side returning html to front end. Must do a Good job and satisfy me. I will hire someone who stays in budget and works with me and has experience.