Responsibilities

Build and own Sekai’s native Android foundation using Kotlin, Android SDK, and modern Android architecture
Design and improve the Android app shell, navigation, lifecycle handling, session management, permissions, push notifications, deeplinks, and release workflows
Create clean integration points for product modules built in native Android, React Native, Flutter, or WebView
Partner with Product, Design, Backend, and Mobile engineers to ship high-quality consumer mobile experiences
Improve Android app reliability, responsiveness, maintainability, and production quality across real-world devices
Build observability and debugging workflows for crashes, app health, release quality, and user-impacting issues
Define engineering patterns for native modules, cross-stack communication, hybrid screen ownership, testing, CI/CD, and rollout
Use modern AI development tools to move faster while maintaining strong engineering quality

Qualifications

5+ years of professional Android engineering experience
Strong hands-on experience with Kotlin, Android SDK, and production Android app development
Experience building or owning major parts of a consumer-facing Android app
Strong understanding of Android architecture, app lifecycle, navigation, concurrency, networking, persistence, dependency management, and modularization
Experience building high-quality mobile UI using Jetpack Compose and/or the traditional Android View system
Strong product sense and care for mobile user experience, polish, responsiveness, and reliability
Ability to make independent architecture decisions and clearly explain technical tradeoffs
Strong ownership mindset and ability to drive work end-to-end in a fast-paced environment
Comfortable collaborating closely with Product, Design, Backend, Mobile, and Growth teams

Experience leading or helping lead a team to build a mobile app from 0 to 1
Experience working in a startup or high-growth consumer product environment
Experience with React Native, including native modules, bridges, or hybrid mobile architecture
Experience integrating Flutter or WebView-based modules into native Android apps
Experience with Android performance profiling, startup optimization, memory management, UI responsiveness, crash reduction, or app health monitoring
Experience with mobile observability and analytics tools such as Firebase Crashlytics, Sentry, Datadog, Amplitude, GA4, or similar tools
Experience with feed-based, social, entertainment, creator, gaming, UGC, marketplace, or other high-engagement consumer products
Experience with Gradle, CI/CD, staged rollouts, Play Console, app signing, and release automation
Familiarity with iOS, TypeScript, React Native, Flutter, or web-based interactive content is a plus
Experience using AI coding tools such as Cursor, Claude Code, Codex, or GitHub Copilot