Android System UI Developer

Android SystemUI Engineer

Position Overview :

We're seeking an experienced SystemUI Engineer to develop and maintain Android's user interface components and system-level UI frameworks.

This role focuses on creating intuitive, performant user experiences through deep SystemUI customization, framework integration, and cross-component communication via AIDL.

We value demonstrated expertise and practical contributions over formal credentials.

Key Responsibilities :

SystemUI Development :

- Design, develop, and maintain SystemUI modules including status bar, navigation bar, quick settings, and notification panel.

- Implement custom lock screen interfaces and system dialogs.

- Optimize UI performance, animations, and user interaction flows.

- Develop and maintain notification system components and behaviors.

- Create responsive and adaptive UI elements for different screen sizes and orientations.

Framework Integration :

- Integrate SystemUI components with Android framework services (ActivityManager, WindowManager, PackageManager).

- Design and implement AIDL interfaces for UI-related inter-process communication.

- Collaborate with framework teams to expose necessary system APIs.

- Ensure proper integration with Android security model and permissions system.

- Work with graphics stack components (SurfaceFlinger, WindowManager) for optimal rendering.

Platform Optimization :

- Optimize SystemUI for memory usage, power consumption, and rendering performance.

- Implement accessibility features and ensure compliance with accessibility standards.

- Debug complex UI rendering issues and interaction problems.

- Ensure compatibility across different device configurations and form factors.

Technical Leadership :

- Participate in UI/UX architectural decisions and system design reviews.

- Mentor developers on SystemUI internals and best practices.

- Contribute to UI/UX technical documentation and coding standards.

- Stay current with Android UI evolution and material design principles.

Required Qualifications :

- Minimum 2-4 years of SystemUI development experience with at least 1-4 shipped Android projects involving significant SystemUI customization or framework integration.

Technical Skills :

- Expert-level SystemUI experience including deep customization of status bar, quick settings, lock screen, notification system, and navigation components.

- Strong Android Framework knowledge particularly WindowManager, ActivityManager, and UI-related system services.

- Proficient in AIDL development for designing UI-related system APIs and service interfaces.

- Advanced Java/Kotlin expertise with strong understanding of Android UI frameworks and components.

- Experience with Android's graphics stack and rendering pipeline.

- Proficiency with Android build system (AOSP, Soong, Blueprint).

Platform Knowledge :

- Deep understanding of Android view system, custom views, and UI performance optimization.

- Experience with Android's theming system and resource management.

- Knowledge of Android accessibility frameworks and implementation.

- Familiarity with material design principles and Android UI guidelines.

- Understanding of touch input handling and gesture recognition systems.

Development Experience

- Hands-on AOSP (Android Open Source Project) development experience.

- Proficiency in Android app development with Jetpack Compose + Kotlin.

- Experience with UI testing frameworks and automated UI testing.

- Proficiency with debugging tools (systrace, perfetto, GPU profiling tools).

- Experience with version control systems (Git, Gerrit) and code review processes.

Preferred Qualifications :

- Experience with Android's modular system architecture and dynamic UI loading.

- Knowledge of Android Runtime (ART) as it relates to UI performance.

- Familiarity with cross-platform UI frameworks and their Android integration.

- Experience with Android's animation frameworks and advanced UI transitions.

Industry Background :

- Experience shipping consumer Android devices with custom UI implementations.

- Understanding of OEM UI customization requirements and constraints.

- Knowledge of Android compatibility testing (CTS) related to UI components.

- Experience with carrier-specific UI requirements and certifications.

Technical Environment :

- Languages : Java, Kotlin, XML (for layouts and resources), Python (for tooling).

- Frameworks : Android Framework (UI focus), SystemUI, AIDL, View system, Material Components.

- Tools : Android Studio, AOSP build tools, UI Automator, Hierarchy Viewer, GPU profiling tools.

- Methodologies : Agile development, design review processes, automated UI testing, accessibility testing.