Mobile App & Smart Digital Frame Software Developer (iOS, Android & Frame APK)

I own a digital frame company I am looking for an experienced developer or small team to build a custom system similar to existing apps, but fully branded under our design/company. The frame manufacturer has confirmed: Frame hardware runs Android 6.0 Custom Android APKs can be installed on the frame The frame can work with iPhone and Android users if our software supports it Manufacturer will test and integrate our Android APK into the frame What We Need 1. Mobile App (iOS & Android) Users should be able to: Create an account Pair a frame using a pairing code and/or QR code Upload photos and videos Send media to their frame Manage multiple frames Manage playlists/media 2. Frame Software (Android APK) An Android application that runs directly on the digital frame. Functions: Connect to WiFi Display pairing code Receive media from backend Download and cache media Play photos and videos on loop Auto-start on device boot Target device: Android 6.0 3. Backend / Cloud Infrastructure Need backend system to: Manage users Manage frames Handle pairing Store photos/videos Deliver media to frames Support iOS and Android applications Experience Required Please only apply if you have experience with: Mobile app development iOS development Android development Backend architecture IoT devices, smart displays, smart home devices, digital signage, tablets, or similar hardware-connected applications Bonus if you have worked with: Digital frames Frameo-like systems Media streaming Firebase AWS