Flutter Stripe Integration

Hello, I’m looking for an individual to implement stripe payments into a flutter project (v2.5.3).

Requirements:
– All stripe functions must be contained within 1 service class in dart. (not including deployment files).
– Deployment to firebase functions should be ready to go without any additional coding/modifications (aside from keys)
– Saving customer cards for future use must be implemented
– Error catching setup, but can be left empty with switch statement/comments describing why the error occurred.
– Must be developed to be secure (no keys kept client-side)
– Must work with both Android and iOS.

Please message with your cost, time-frame for completion, or questions.