As an AdMob specialist and a seasoned mobile app developer with 7 years of experience, specializing in Android specifically, I believe I would be an excellent fit for your app optimization and feature implementation needs. Throughout my career, I've consistently demonstrated my ability to enhance user experiences exactly like what you're asking for. From reviewing and optimizing ad placements to ensuring smooth loading of ads during the splash screen phase, I've tackled and solved diverse challenges that you detailed in your project description.
One significant advantage of working with me is how seriously I take communication and detail. This ensures thorough troubleshooting and resolution of any issues that may arise, just like the dependency updates you require with Gradle, OneSignal, and Firebase. Additionally, my expertise in mobile app development extends beyond AdMob as well. So not only can I help streamline your reward ad feature correctly aligning with all other applicable ads but also add value by integrating a "Quiz" button into your app dashboard while removing the "QR" button.
To sum it up, choosing me will mean having a dedicated and reliable professional who provides tailored solutions based on creative insights gleaned from many years of successfully completing projects similar to yours. So why wait? Click the "Hire Me" button today to leverage this experience and let's optimize your app for both great revenue and user experiences together!