Hi there, we run a Digital Marketing Agency INDUS MEDIA UK here in UK, we do Design, Development and maintenance of web and mobile application, we normally work in Java, .Net(core), PHP, Android Studio Flutter and other commonly used platform. There are 25 professional developers in our team, your project details are well understood and we can do exactly how you described in your project and we fulfill about all your requirements, we can easily develop application a secure, fast and batter optimized on Google platform.
We can discuss more in chat.