Senior iOS Engineer

<h3><strong>About Us</strong></h3> <p>Twitch is the world’s biggest live streaming service, with global communities built around gaming, entertainment, music, sports, cooking, and more. It is where thousands of communities come together for whatever, every day.</p> <p>We’re about community, inside and out. You’ll find coworkers who are eager to team up, collaborate, and smash (or elegantly solve) problems together. We’re on a quest to empower live communities, so if this sounds good to you, see what we’re up to on <a class="c-link" href="https://link.twitch.tv/TwitchLinkedinJD" target="_blank" data-stringify-link="https://link.twitch.tv/TwitchLinkedinJD" data-sk="tooltip_parent">LinkedIn</a>&nbsp;and&nbsp;<a class="c-link" href="https://link.twitch.tv/TwitchTwitterJD" target="_blank" data-stringify-link="https://link.twitch.tv/TwitchTwitterJD" data-sk="tooltip_parent">X</a>,&nbsp; and discover the projects we’re solving on our&nbsp;<a class="c-link" href="https://link.twitch.tv/TwitchBlogJD" target="_blank" data-stringify-link="https://link.twitch.tv/TwitchBlogJD" data-sk="tooltip_parent">Blog</a>. Be sure to explore our&nbsp;<a class="c-link" href="https://link.twitch.tv/TwitchInterviewingJD" target="_blank" data-stringify-link="https://link.twitch.tv/TwitchInterviewingJD" data-sk="tooltip_parent">Interviewing Guide</a>&nbsp;to learn how to ace our interview process.</p> <h3><strong>About the Role</strong></h3> <p>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.&nbsp;</p> <p>You will report to the Senior Engineering Manager for Mobile Core iOS and can work from either our Seattle, Irvine, San Francisco or our New York City offices.</p> <h3><strong>You Will:</strong></h3> <ul> <li>Own and drive the technical strategy for foundational iOS components, native video playback infrastructure, and hybrid (React in WebView) frameworks</li> <li>Architect and build robust WebView infrastructure and bridges that enable seam