We will use the Shareponit REST API to do so.
Our app already uses the Office365 REST API (with Oauth2)
We are looking for a developer that can provide us with the PHP scripts to get, post, delete,.. the contacts in sharepoint.
... We can provide all the environment (test accounts..)
Ability to code in PHP
USe REST API
Use Microsoft authentification proptocole (Oauth2)