Facebook and Google Rest API Based Authentication via Wordpress

Hi, We need a expert level developer to do this task according to below mentioned specs for us. Please Don't waste your time writing a proposal for wordpress site since this is entirely different from what normally is present in wordpress. So please provide the high level approach in your proposal for this task which you will be taking while implementing this. We have a lot of tasks we need done. Below is just 1 task to see if you will be able to meet our expectations. This is not for normal wordpress devs so we will be talking with only those who have read this proposal and send their proposal accordingly. Facebook and Google Authentication: We require a REST API for authenticating into wordpress via facebook and google. Facebook API Specifications: URL of API /auth/facebook Request Body { access_token : string } Response Body Wordpress normal authentication response Google API Specifications: URL of API /auth/google Request Body { access_token : string } Response Body Wordpress normal authentication response with JWT. Users signed up through this method should be visible in WP admin as normal. Normal flow would be if user does not exist, it will be created else existing user will be signed in. Important - Mention SOCIAL_AUTH_WORDPRESS_EXPERT at the beginning of your proposal so that we can consider you.