I read your requirements and ready to start work on it . I am experienced web developer and very well families with angular js and firebase database
feel free to talk. I am available on skype and can be catch me on freelancer.
Happy to hear from you.
Best regards
Ravinder sharma
I'm experienced with Firebase and previously built two chat systems using Firebase
I am very talented at finding and fixing elusive issues, let's talk and see how I can get your issue resolved quickly