App Customisation - 6ammart

I'm looking for an experienced app developer who can help me customise my existing app. The main focus of this project is to make necessary changes to the app's functionality.

Customisation List :
- Push Notification customisation with category link
- Food Category ON / OFF in vendor app with timer
- Need Playstore Or App Store Link (Based on user app platform) with referal code on sharing the referal code
- Need two line category icons and need to suffel the icon on module index page
- Login page customisation
- PopUp on index page landing
- Need live map moving for Delivery man app
- Need Popup screen with item link / store link / campagin link
- Change Splash Screen
- Payment Gateway Already integrated and need some changes
- Ensure Proper notification alert
- Store Wallet : Need to add only the item price with detuction of admin order commission
- Campagin functions
- Combo Offer on product from store & Admin