Hi, there, how are you? I can implement the double authentification perfectly.
I am a full-stack developer and very familiar with react, angular, node, express, firebase. I have many experiences in firebase(auth, firestore, cloud functions, push notification and extensions), web app, SPA, PWA, SASS and Twilio API.
I always work hard and deliver the best result with the well commented clean code.
Kindly contact me to get started the project.
Look forward to response from you.
Many Thanks, Konstantin