Expert Native Android developer needed to fix java bugs in android app

Looking for an experienced expert java coder to improve the performance of already developed android app. Its a location tracking app and whole code has been written; front end : java back end: node with mongodb we have done the code inspection with Lint in Android studio, see the attached pic for all issues/warnings. we want to fix all these issues. It would be + point if developer has also worked with android studio profiler, we also want cpu/memory profiling of app to fix any possible memory leak issues to make the app behavior flawless without any crashes, screen freezes. Its a long term project and we want to add more features in the app, through this task we would filter the java developers who can work with us on long term basis. Code optimization is only one part of app, through which we would assess the quality of work the developer is producing. This project requires experience with: - Experience building Android applications in Java using the Android SDK - Experience in understanding large and complex code bases - Working with APIs written in Node In your proposal, please share a brief summary of your experience and tell us about a recent Android project, ideally one currently available on Google Play.