swift developer to update application - firebase cloud function (JS)

i have an application that is almost ready but i need iOS developer to help me with firebase cloud functions i have two application works as providers and consumers, i'm using cloud firestore as datebase, what i need is:- 1- cloud function to update specific field on specific document from "true" to "false" after some time. 2- cloud function to send FCM to specific user on change of some field. 3- good way to manage firestore collections (move document from one collection to another), querying directly from the console or CLI(to be dicussed). 4- enhancing on FCM with badges(i will do it my self if you running out of time) 5- few changes maybe required. these changes must be done within 5 days maximum. looking for individuals only.