Create Wordpress prototype with some specific integrations

Hi, I'm looking to set up a technical prototype. So at this stage design can be really basic. It's more about building a proof of concept with certain integrations. Any generic offers will be ignored. So make sure you reference the content of the description. 1) Users & auth0 - integrate via single sign on with auth0 - so sign up and login is handled by auth0 (auth0 has a plugin for that that works pretty straight forward, [login to view URL]) - for testing: register and sign in of new users shows up in auth0 + wordpress 2) Custom user attributes - we have an existing MEAN stack. in the mongodb we have some custom user attributes. Those need to be accessible in wordpress to the users - the attributes need to sync, ie updates via wordpress flow back to mongodb and vice versa - mongodb can be accessed via our REST Server - we can add custom code in REST Server, node.js server if required - for testing: attribute_A, attribute_B sychrozine between mongodb and wordpress, can be updated via mongodb or wordpress 3) Subscription model - users can select a subscription plan (out of a list of available plans) - subscription model is chargeable, wordpress triggers the billing - identify ideal billing system: could be with Woocomerce Subscription, could be something else (licensing cost are not part of the project, actually set up of charging via subscription tool is not part either, but tool should accept plans) - subscription plan shows up in mongodb - for testing plan_A, plan_B are available and can be selected by user Project: - set up some dummy wordpress, we can provide domain/hosting if needed - integrate 1+2+3 as described above - use some basic design so it works. priority is functionality Use Cases to be tested successfully for completion 1) Register new user - user shows up in wordpress and auth0 2) Login the newly registered user - we will test login on another system utilizing the auth0 data 3) show user attributes_A and B. Update User attributes. We check they are updated in mongoDB. We will update attribute A in mongo and check it's showing in Wordpress 4) select a subscription plan, check selected plan shows up under mongodb