[Remote] Mobile iOS Engineer

Note: The job is a remote job and is open to candidates in USA. xAI is dedicated to creating AI systems that enhance human understanding of the universe. They are seeking an exceptional iOS engineer to join a high-impact team focused on developing cutting-edge mobile experiences that redefine user interaction with AI.

Responsibilities

• Dream up and craft delightful, intuitive user experiences that redefine how people interact with AI on mobile
• Obsess over every pixel, animation, and interaction, ensuring the experience feels magical and seamless
• Build blazing-fast, highly performant systems where every millisecond counts
• Drive technical and product decisions, collaborating with AI researchers and engineers to deploy state-of-the-art models globally

Skills

• Expert in Swift, with deep knowledge of UIKit and SwiftUI
• Proficient in performance optimization—memory, CPU, GPU—using low-level tools to deliver blazing-fast systems
• Experienced in designing and shipping intuitive, pixel-perfect mobile UIs that redefine how users interact with AI
• Skilled in concurrency and reactive programming (Combine) for responsive, real-time apps
• Built high-throughput integrations with APIs (REST, gRPC) or AI model outputs, ensuring seamless data flow
• Capable of owning complex features end-to-end, from architecture to App Store deployment, with a focus on speed and scalability
• Deep expertise in the Apple ecosystem and related development tools
• Rust for working with our backend components
• AVFoundation for real-time audio processing
• Track record of shipping standout apps or standout features within apps
• Deep expertise in iOS development, particularly with Swift. We seek individuals who operate at the highest levels of their craft
• Excel at delivering results swiftly, often in a fraction of the time others require. Speed is a core value at xAI—we must act decisively to succeed
• A sharp product sense, with an ability to empathize with users, anticipate their needs, and translate that into features that delight and deliver value

Benefits

• Equity
• Comprehensive medical, vision, and dental coverage
• Access to a 401(k) retirement plan
• Short & long-term disability insurance
• Life insurance
• Various other discounts and perks

Company Overview

Company H1B Sponsorship