Exported FlutterFlow App, Background Geofencing, and Pilot Support

I have a location-aware app prototyped in FlutterFlow and exported into a pure Flutter project. Before we roll it out to our first group of real users, I need an experienced Flutter specialist who can implement and stabilize background geofencing with local notifications on iOS and Android, harden and refactor the exported codebase for production, handle App Store and Play Store submissions, and be on standby for six weeks while we run a live pilot.

Current state
• Code compiles and runs cleanly on both iOS and Android; we have not observed any crashes or slow-downs yet, but I want an expert eye on it.
• Core feature is background geolocation that notifies users when they are within roughly 40 m of a saved location.
• All designs, assets, Firebase back-end and push notification hooks are already in place.
• Codebase originated in FlutterFlow and has been exported to Flutter. Candidates must be able to integrate custom Dart or native code on top to deliver robust background geofencing and notification logic.

Your mission

Code quality and stability
– Deep dive into the exported Flutter codebase, refactor where needed, and flag anything that could trip us up in production.
– Implement reliable background geofencing that works when minimized, locked, or killed, triggering instant local notifications on entry.
– Stress-test background location logic, push handling, and memory usage.
– Leave the repository clean, documented and aligned with Flutter best practices.

Store submission
– Prepare and sign production builds for both iOS and Android.
– Handle all certificates, provisioning profiles and Play Console / App Store Connect settings.
– Ensure compliance with App Store and Play Store policies, including Apple’s background location review.

Pilot-phase support (6 weeks)
– Be reachable ad-hoc for hotfixes or quick questions.
– Turn around any critical patches (geolocation drift, notification glitches, unexpected crashes) within agreed SLAs.

Deliverables
• Reviewed, refactored code pushed to Git repository
• Stable integration of custom background geofencing and local notifications within the FlutterFlow-exported codebase
• Successfully approved listings in Google Play and Apple App Store
• On-call availability schedule and response plan for the pilot
• Final hand-off report summarising all fixes, store assets, build numbers and next-step recommendations

Tooling and workflow
GitHub, Flutter 3.x, Xcode, Android Studio, Firebase Cloud Messaging, and whatever profiling tools you prefer.