Hello,
Thank you very much for sharing your requirement to optimize the user login functions, using facebook, twitter and G+ Oauth 2.0 with firebase.
I am very much familiar with the requirement, skills and technology stack required to accomplish the task. I have 4+ years of experience in Angular.js, CSS, HTML5, Javascript. I can certainly fulfill your project requirements.
I would like to be invited for further discussion on the project in detail.
Look forward to hear.
Regards,
Jasjot Singh