Mobile iOS Engineer

xAI is seeking an exceptional Mobile iOS Engineer to join a small, high-impact team in New York City dedicated to creating the world’s most valuable AI application. In this role, you will dream up and craft delightful, intuitive user experiences that redefine how people interact with artificial intelligence on mobile devices. You will obsess over every pixel, animation, and interaction, ensuring the mobile experience feels magical and seamless. In addition to frontend brilliance, you will build blazing-fast, highly performant systems where every millisecond counts, driving critical technical and product decisions. To succeed, you must be an expert in Swift with deep knowledge of UIKit and SwiftUI, and be proficient in performance optimization across memory, CPU, and GPU. You will collaborate closely with AI researchers and backend engineers to deploy state-of-the-art models globally. This role demands candidates who can own complex features end-to-end, from architecture to App Store deployment, with a relentless focus on speed, scalability, and excellence. Joining xAI means working in a fast-paced, flat organization where work ethic, curiosity, and execution are paramount.