Xamarin developer for iOS and Android

I need an experienced Xamarin developer for a webforms application that I have which is for iOS and Android. I need some enhancements to be added to the application along with some interface changes and general tidy up. First Task would be to make a Dynamic equation builder, 1- We have a list of master equations stored in sqllite [login to view URL] 2- When a master equation is selected e.g. "Master Equation 1" we specify the Dynamic equations under that equation as per the wire frames. 3- it must be saved to an sqllite database The 2nd item is to create a function to parse the Master equation from sqllite along with the Dynamic equation ranges inside that equation into a function/class. Then pass the range variable to that function and it will return the equation to use. e.g. [login to view URL](range) returns the equation, so if my range was 26 it would return the third equation X*b+250 There are other items to address but the above two are what is needed at the moment.