Required DART,Google Analytics,Push Notifications,QR & Barcode Scanner,Hybrid freelancer for Grocery Shopping App Modification job

I Have a flutter app, now I want customization and solve minor bugs with our colleagues (we need long term support).

1 Login with Google and Facebook
2 Login with using firebase OTP.
3. payment gateway integration (Paytm, phoneme, google pay).
4. when checkout give a select option for delivery time and date.
5. In the delivery app, we need to add a collect payment option.
6. delivery app we need to add user sign (canvas) and image upload option.
7. google ads integration.
8. Small other changes and minor bug solve
Note: Preference who know Kannada end talented new to freelancing, hunger to learn skills.

Skills & Expertise Required

DART Google Analytics Push Notifications QR & Barcode Scanner Hybrid