Mobile iOS Engineer

SpaceXAI; New York (NY); On-site; USD 180,000 - 440,000; Full time

Benefits offered by this job

Equity

Medical, Vision, and Dental

401(k)

Disability insurance

Life insurance

Job summary

xAI is seeking an exceptional iOS engineer to join a small, high‑impact team building the world’s most valuable AI application. You’ll shape mobile experiences by blending technical mastery with product brilliance, delivering fast, polished apps that scale globally.

You’ll own features end‑to‑end—from architecture to App Store deployment—while collaborating with AI researchers and engineers to push the boundaries of on-device intelligence and seamless user interactions.

Qualifications

• Expert in Swift with UIKit and SwiftUI.
• Experience with performance optimization and low-level profiling.
• End-to-end feature ownership from architecture to App Store deployment.
• Concurrency and reactive programming using Combine.

Responsibilities

• Design delightful, intuitive mobile UX for AI-powered apps.
• Polish visuals, animations, and interactions for a magical feel.
• Build fast, scalable systems where milliseconds matter.
• Collaborate with AI researchers to deploy models globally.

Skills

Swift

UIKit

SwiftUI

Combine

REST APIs

End-to-end ownership

Tools

Xcode

iOS profiling tools

Job description

ABOUT xAI

xAI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. Our team is small, highly motivated, and focused on engineering excellence. This organization is for individuals who appreciate challenging themselves and thrive on curiosity. We operate with a flat organizational structure. All employees are expected to be hands‑on and to contribute directly to the company’s mission. Leadership is given to those who show initiative and consistently deliver excellence. Work ethic and strong prioritization skills are important. All employees are expected to have strong communication skills. They should be able to concisely and accurately share knowledge with their teammates.

ABOUT THE ROLE

We’re seeking an exceptional iOS engineer to join a small, high‑impact team dedicated to creating the world’s most valuable AI application, judged by the impact it delivers to users. You’ll shape cutting‑edge mobile experiences, blending technical mastery with product brilliance.

RESPONSIBILITIES

• Dream up and craft delightful, intuitive user experiences that redefine how people interact with AI on mobile.
• Obsession 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.

BASIC QUALIFICATIONS

• 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.

PREFERRED SKILLS AND EXPERIENCE

• 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.

COMPENSATION AND BENEFITS

$180,000 - $440,000 USD

Base salary is just one part of our total rewards package at xAI, which also includes equity, comprehensive medical, vision, and dental coverage, access to a 401(k) retirement plan, short & long‑term disability insurance, life insurance, and various other discounts and perks.

xAI is an equal opportunity employer. For details on data processing, view our Recruitment Privacy Notice.