Update IOS mobile App

I need a mobile developer to update my IOS app built on Objective C and Swift. I would like to carry out the following changes;

Advance the Login system for different types of users,
Add Facebook Login and authentication,
Add Facebook Ads,
Upgrade the payment gateways (Stripe/Paypal),
Add Lottie animation to the onboarding screens,
Add Mapbox Map that draws the path of a user from data received from the backend API,
Add IOS push notification triggered by pressing a button,
And a few miscellanous changes.

I have prepared a more detailed job specification and would send it to you upon request if I think your bid is reasonable.
Timeframe is within two weeks but may be open to extension.