Flutter App Deployment & Payments

I need a Flutter release engineer who can take our two existing apps all the way to production using the runbook in RELEASING.md. My immediate focus is getting clean, reproducible builds into TestFlight and the Play Console, then approved in both stores... (Budget: $30 - $250 USD, Jobs: Android, Flutter, GitHub, iOS Development, Mobile App Testing, Payment Gateway Integration, Payment Processing, Xcode)