The Mobile Core team develops frameworks and tools that empower engineering teams across Twitch to build compelling mobile experiences. In this role, you will directly contribute to creating and refining core features, such as Video Playback, while architecting strategic solutions for internal developers. Twitch is evolving its mobile strategy from native-first to a hybrid approach that leverages React in WebViews alongside native iOS 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.

Own and drive the technical strategy for foundational iOS 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 iOS 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 iOS 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

Senior iOS Engineer

Responsibilities

Qualification

Required

Preferred

Benefits

Company

Twitch

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