Required PHP,Drupal freelancer for Drupal 7: Customize Social Sign-in job

We are looking for a Drupal 7 developer to get social sign-in to work (sign in using Facebook, Twitter, Google)

Using the contrib module gauth (https://www.drupal.org/project/gauth) we had problems getting it to work on a modal pop-up register form (error with ajax request)

Also on register form we have a "newsletter sign-up" checkbox. We also want users signing up / logging in via social to be able to sign-up to the newsletter upon registering. I think in Facebook there is a dedicated permission but I'm not sure how this is handled with GAUTH

Ideally we are looking for somebody for a long-term cooperation as we have lots of further projects.

Skills & Expertise Required

PHP Drupal