Flutter Mobile App

Looking for someone who can help in doing the following:
- Clean up the login/signup (OTP process), this has been set up but needs to fix an error that doesn't send code all the time.
- Login/Signup (with firebase phone OTP) with onboarding questions to be used for matching similar preferences
- Onboarding questions for matching, these questions will be used to match other users.
- Set up google or twilio API: chat video group chat, calendar, and email.

Technologies on the apps
Flutter, Dart, Firebase, Java

Let me know if you are interested in this project. Please provide previous work and experience in your proposal.

provide previous work that you may have worked successfully on OTP Cleanup, firebase chat, agora/twilio video, calendar API cleanup, and experience in setting up firebase database and storage with efficiency. I need someone who can help clean up some of the firebase setup.
If you have done work similar to dating app, social, and events and recruiting app, please provide examples that has payment (stripe or ACH) that is setup, but not tested. Chat/video call. Google API integration and data optimization using firebase.
My first task for the developer will be to fix the OTP initial setup and workflow. It's still bugging out in IOS and only send message in first pass in android. Need to fix that in code or in firebase setup.
Second task, make sure the onboarding sequence works with the desire design and data testing for CRUD.
Third task, firebase chat. and video chat.
Once that is done, and tested, we will launch in app store for beta testers from our list and use firebase SMS to send links to all the presign up # and emails.

If you are interested, and have done work in similar apps, please provide examples Preferably those you have built using flutter and firebase framework