Test firestore rules and build authguard

I have an existing ionic 4 project using a firebase back end. The application is functional, but I am looking for a resource that can review and finalise all aspects of the security. This will certainly involve modifications at: Firebase Level: Security rules should allow access to required data only Application Level: UI options that are not available to the role should not be shown Application Level: User should be directed to gain next level of security when they attempt to access something requiring it (i.e prompt for signup when accessing advanced search) The application needs 4 levels of access: 1) Unauthorised: Basic Search and can view items 2) Signed in: Advanced Search, Contact, Make Bookings 3) Manager: Can access management functions 4) Admin: Can access admin functions This functionality has already been created in general and you will need to only enhance firebase rules, work with and re-use existing AuthGuards and implement a re-direct or prompt for sign-up The project will also include the finalisation of google + login, which has been implemented, but is not currently working (facebook login working ok already) This project is aimed at a professional with experience in this field that will be able to quickly implement the required rules and code baed on previous knowledge. Please do not apply unless you have implemented similar functionality elsewhere Please state in your application where you implemented Firebase security rules and angular AuthGuards in previous projects PLEASE START THE BID WITH " FIREBASE EXPERT "