The candidate will be responsible for the development of UI for the Android PTT application. The UI will be written on top of a PTT service framework that will provide a high level API set. The UI will have to work with these high level APIs to control various PTT features and call flows. The UI wireframes and required assets will be provided to the developer. Some of the UI features include contacts list maintenance, call log maintenance, PTT floor management, group management, user notifications and error handling. Skills/Experience: Candidate should have 2+ years of Android development experience.