Senior Software Engineer

### Who you are
- 5+ years of non-internship professional software development experience
- 5+ years of programming with at least one software programming language experience
- 5+ years of leading design or architecture (design patterns, reliability and scaling) of new and existing systems experience
- Experience as a mentor, tech lead or leading an engineering team
- 6+ years of professional Android development experience
- Mastery in Kotlin and modern Android development practices
- Deep understanding of Android SDK, Jetpack libraries, and Android architecture components
- 6+ years building and shipping production Android applications to the Google Play Store
- Track record of leading major architectural initiatives, migrations, or platform-level projects
- Experience mentoring engineers and raising the technical bar across teams
- Experience leveraging AI-powered development tools (such as Claude Code, GitHub Copilot, Cursor, or similar) to accelerate development
- 5+ years of full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations experience
- Experience with hybrid mobile architectures, WebView integration, JavaScript bridges, React, or React Native
- Experience with video streaming or real-time communication technologies
- Experience working on platform or infrastructure teams that support multiple product teams
- Familiarity with Twitch, either as a viewer or creator (or both!)

### What the job involves
- Join Twitch's Mobile Core Engineering team as an Android Software Engineer and help shape the foundation of mobile development across Twitch
- As a platform team, Mobile Core provides critical tools, frameworks, and best practices that empower all mobile engineers at Twitch to build exceptional experiences for millions of users
- Twitch is evolving its mobile strategy from native-first to a hybrid approach that leverages React in WebViews alongside native Android capabilities
- You'll work on high-impact initiatives including our hybrid web-to-mobile platform, performance optimization at scale, automated testing infrastructure, and developer tooling that accelerates velocity across the organization
- Your work will directly impact how hundreds of engineers build features and how millions of users experience Twitch on Android
- This role requires independent operation and technical leadership, as you'll regularly provide guidance to product teams across Community and Commerce organizations
- Own and drive the technical strategy for foundational Android components, native video playback infrastructure, and hybrid (React in WebView) frameworks
- Architect and build robust WebView infrastructure and bridges that enable seamless integration between React-based web content and native Android functionality
- Lead performance optimization efforts for platform components used by millions of daily active users, establishing benchmarks and best practices
- Provide technical leadership and mentorship to Android engineers across multiple product teams and within Mobile Core, including onboarding and growing L4/L5 engineers
- Drive cross-organizational architectural decisions that balance developer velocity, app performance, and maintainability, representing Mobile Core's technical perspective in org-wide discussions
- Collaborate with cross-functional teams to establish and maintain development standards for hybrid mobile applications, influencing adoption across the mobile engineering organization