Mobile iOS Engineer

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

Benefits offered by this job

Equity

Medical coverage

Vision and dental

401(k)

Disability insurance

Life insurance

Discounts and perks

Job summary

SpaceXAI is seeking an exceptional iOS engineer to join a small, high-impact team focused on building the world’s most valuable AI application. You’ll shape mobile experiences that blend technical mastery with product brilliance and deliver delightful, pixel-perfect interfaces.

You will own features end-to-end, optimize performance, and collaborate with AI researchers to deploy models globally, building fast, reliable apps that scale across devices and platforms.

Qualifications

• Expert in Swift with UIKit/SwiftUI experience.
• Proven performance optimization for mobile apps.
• Designing and shipping pixel-perfect mobile UIs.
• Concurrency and reactive programming with Combine.
• Ownership of features from architecture to deployment.
• Strong API integration experience (REST/gRPC) or AI outputs.

Responsibilities

• Dream up and craft delightful, intuitive user experiences for AI on mobile.
• Attention to every pixel, animation, and interaction for a magical feel.
• Build blazing-fast, high-throughput systems with optimal performance.
• Drive technical and product decisions with AI researchers and engineers.

Skills

Swift

UIKit/SwiftUI

Performance optimization

Pixel-perfect UI

Combine

APIs (REST/gRPC)

End-to-end ownership

Tools

Apple ecosystem tooling

Rust backend

AVFoundation

Job description

SpaceXAI’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.
• 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.

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 SpaceXAI—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 SpaceXAI, 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.

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