Mobile iOS Engineer

• 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
• 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
• 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
• 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

Benefits

• Health and wellness: Comprehensive health insurance including medical, dental, vision, and disability coverage
• Life and family: Life and AD&D insurance and fertility benefits to ensure our team’s well-being and peace of mind
• Flexible vacation: We work hard but avoid burn out. Take time off when you need it
• Visa sponsorship: We support international talent with visa sponsorship to join our team
• 401(k) plan: Retirement savings plan to secure your financial future

• Deep expertise in iOS development, particularly with Swift. We seek individuals who operate at the highest levels of their craft
• A sharp product sense, with an ability to empathize with users, anticipate their needs, and translate that into features that delight and deliver value
• 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
• This organization is for individuals who appreciate challenging themselves and thrive on curiosity
• Work ethic and strong prioritization skills are important
• All engineers are expected to have strong communication skills. They should be able to concisely and accurately share knowledge with their teammates
• Experienced in designing and shipping intuitive, pixel-perfect mobile UIs that redefine how users interact with AI
• Expert in Swift, with deep knowledge of SwiftUI and UIKit
• Skilled in concurrency and reactive programming (Combine) for responsive, real-time apps
• Capable of owning complex features end-to-end, from architecture to App Store deployment, with a focus on speed and scalability
• Built high-throughput integrations with APIs (REST, gRPC) or AI model outputs, ensuring seamless data flow
• Proficient in performance optimization—memory, CPU, GPU—using low-level tools to deliver blazing-fast systems
• Track record of shipping standout apps or standout features within apps
• Rust for working with our backend components
• Deep expertise in the Apple ecosystem and related development tools
• AVFoundation for real-time audio processing

• After submitting your application, the team reviews your CV and statement of exceptional work. If your application passes this stage, you will be invited to a 15 minute interview (“phone interview”) during which a member of our team will ask some basic questions
• If you clear the initial phone interview, you will enter the main process, which consists of 3 technical interviews:
• Initial Interview with a senior member of the iOS Team
• Technical Interviews: Demonstrate practical skills in live problem-solving sessions
• Final Interview
• Our goal is to finish the main process within one week. All interviews will be conducted via Google Meet