iOS Engineer, ChatGPT Mobile Infrastructure

Job description

About the Team We’re building up the core Swift platform, from architecture to CI, that enables hundreds of engineers (and their agents) to develop new capabilities in ChatGPT, Atlas, Sora, and other rapidly evolving apps. Our focus is helping teams move quickly while improving on performance or reliability. About the Role: We’re hiring Staff+ engineers with a variety of iOS platform backgrounds, including people who may specialize in performance, build/CI, or AI developer productivity. Whether you focus on UI frameworks or automated testing, your work will show up as less friction, less complexity, fewer regressions, and better performance. If you're rethinking how to scale Swift development in the context of increasingly capable AI tools, this is the role for you. We are hiring in San Francisco, New York and Seattle. In this role, you may: Build and evolve foundational Swift frameworks used across multiple apps and platforms (caching, state management, observability, navigation, component systems). Improve app performance (startup, responsiveness, memory, battery) through profiling, visibility, regression prevention, or architecture patterns. Strengthen reliability: systemically...