Senior iOS Engineer

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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.

• 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

• 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

• 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

• Medical, Dental, Vision & Disability Insurance
• 401(k)
• Maternity & Parental Leave
• Flexible PTO
• Amazon Employee Discount

Job

The base salary range for this position is listed below. Your Amazon package will include sign‑on payments and restricted stock units (RSUs). Final compensation will be determined based on factors including experience, qualifications, and location. Amazon also offers comprehensive benefits including health insurance (medical, dental, vision, prescription, Basic Life & AD&D insurance and option for Supplemental life plans, EAP, Mental Health Support, Medical Advice Line, Flexible Spending Accounts, Adoption and Surrogacy Reimbursement coverage), 401(k) matching, paid time off, and parental leave.

Learn more about our benefits at .

US, WA, Seattle
- Annually

$168,100—$227,400 USD

US, CA, San Francisco
- Annually

$193,300—$261,500 USD

US, NY, New York
- Annually

$184,900—$250,200 USD

US, CA, Irvine
- Annually

$168,100—$227,400 USD

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