I need an experienced mobile developer to build a business-productivity application for Android. The main goal is to help users streamline everyday work tasks, so the build must feel fast, intuitive, and reliable on current Android versions. Core expectations • A clean, modern Material-compliant UI/UX that is easy to navigate. • Solid architecture (MVVM, Clean, or another well-documented pattern) so future updates are straightforward. • Smooth offline/online data handling and secure local storage. • Automated unit and instrumentation tests covering critical flows. • A signed APK/AAB ready for Play Console upload, plus full source code in Git. Acceptance criteria 1. The app installs and launches without crashes on Android 8+. 2. All stated productivity features are fully functional and persist data between sessions. 3. UI meets Google accessibility guidelines. 4. Code passes provided test suite and static analysis (lint) with no critical issues. I’ll supply wireframes, a feature list, and any brand assets once we kick off. If you have recent Play Store links to similar work or can suggest frameworks such as Jetpack Compose, Room, or Retrofit to speed up development, include them in your proposal.