Urgent Android & iOS App Development

I have an immediate need for a skilled mobile app developer with around 4–5 years of solid, hands-on experience building, testing and publishing apps for both Android and iPhone. The core requirement is to take my concept and turn it into fully functioning releases on Google Play and the App Store... (Budget: $250 - $750 CAD, Jobs: Android, Flutter, iOS, iPad, iPhone, Kotlin, Mobile App Development, React Native)