Senior iOS Engineer, Twitch

Description

If you are interested in this position, please apply on Twitch's Career site https://(Use the "Apply for this Job" box below)./

About Us:

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.

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 Linked In and X,  and discover the projects we're solving on our Blog. Be sure to explore our Interviewing Guide to learn how to ace our interview process.

About the Role

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 Web Views 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.

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.

You Will

- Own and drive the technical strategy for foundational iOS components, native video playback infrastructure, and hybrid (React in Web View) frameworks

- Architect and build robust Web View 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

Perks

- Medical, Dental, Vision & Disability Insurance

- 401(k)

- Maternity & Parental Leave

- Flexible PTO

- Amazon Employee Discount

Basic Qualifications

- 6+ years of non-internship professional software development experience

- 6+ years of programming with at least one software programming language experience

- 6+ 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 iOS development experience

- Strong proficiency with Swift and the iOS architectural components and ecosystem

- 6+ years of building and shipping production iOS applications to the Apple App Store

- A talent for building consensus around technical decisions and guiding the team along evolving architecture patterns

- 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, Git Hub Copilot, Cursor, or similar) to accelerate development

Preferred Qualifications

- Experience with hybrid mobile architectures, Web View 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

Twitch is an equal opportunity employer and does not discriminate on the basis of protected veteran status, disability, or other legally protected status.

Los Angeles County applicants:
Job duties for this position include: work safely and cooperatively with other employees, supervisors, and staff; adhere to standards of excellence despite stressful conditions; communicate effectively and respectfully with employees, supervisors, and staff to ensure exceptional customer service; and follow all federal, state, and local laws and Company policies. Criminal history may have a direct, adverse, and negative relationship with some of the material job duties of this position.

These include the duties and responsibilities listed above, as well as the abilities to adhere to company policies, exercise sound judgment, effectively manage stress and work safely and respectfully with others, exhibit trustworthiness and professionalism,…