Wordpress - custom code to link Wordpress profiles with our CMS

We have a standard Wordpress site and would like to add some customization to the user profiles. Additionally we need some custom coding to link the Wordpress user profile to an external service which we use to store customer information (our CMS). This CMS has an API which we can use to add and update the accounts. I have used this API and can provide detailed documentation along with examples of how it is used. We have a development site setup to review these changes. Please keep track of which files/plugins are changed so that we can move all changes to our live site once complete. Project requirements are listed below: 1. Add some custom fields to the user profiles. These fields need to be editable when adding/updating the user profiles. - Primary Cell Number - Secondary Phone Number - Secondary Email - Contact Type: Multiselect (Parent, Coach, Referee) - FreeAgent Id (ID used to link to external service. This should be visible in user profile, but readonly) 2. On the Wordpress registration form (modal form from top right link on website) add some additional fields: - First Name - Last Name - Primary Cell Number - Contact Type: Multiselect (Parent, Coach, Referee) These fields should save to the user profile when a user registers. 3. Connect the Wordpress account with FreeAgent (the external service) after registration - FreeAgent is a CMS we use to manage our customers and contacts - I will provide detailed documentation and examples for their API - After registration (use a Wordpress hook so it applies to all registrations) check FreeAgent and either update or add a new contact - Wordpress should check FreeAgent for a matching existing contact first. If the first name, last name and email all match - If a match is found: 1. Update the profile fields on the existing FreeAgent record 2. Get the FreeAgent ID and save it to the Wordpress profile. - If no match is found, then add a new contact in FreeAgent: 1. There are 10 fields that will need to map from Wordpress the FreeAgent: First Name, Last Name, Contact Type, Primary Email, Secondary Email, Primary Cell Number, Secondary Cell Number, Contact Channel (always "Wordpress") 2. Get the FreeAgent ID and save it to the Wordpress profile. 4. When updating a user profile in Wordpress it should auto update the matching FreeAgent profile - Use the FreeAgent Id field to match the accounts - All of the same fields listed above should be updated upon saving - Use a Wordpress hook so the account is updated from both front-end and admin user profile pages. Thanks and please let me know if you have any questions about the project.