Flutter Expert for my social chat application

I am looking for someone who has a good experience in App Designing with flutter and have developed a least one chat application before.

Requirements
- You must be able to work with Firebase, REST API(s) and 3rd party chat libs like send bird, twillio or getstream.io
- You will have to work as per MDT timezone
- You will have to sign NDA and IP Agreement
- Must have experience with localization, accessibility
- You must know how to build location based services
- You must have experience with search engine libs i.e Algolio, Elastic Search, TypeSense etc.


Please answer all questions
1. How much experience do you have in flutter widget designing?
2. how about the widget unit and integration testing, in-app-purchases using 3rd party libs and with Rest API(s) ?
3. have you used any CICD pipeline before? i,e, fastlane, gocd, jenkins, bitbucket, or anything else
4. have you deployed any mobile app to any store?
5. do you have examples of your chat applications?
6. Do you have a team or will you work alone?
7. How much time do you need to build an application like slack?