Mobile iOS Engineer, SpaceXAI
£170-262k
+ Equity
Building artificial intelligence
Open for applications
Building artificial intelligence
1001+ employees
Open for applications
£170-262k
+ Equity
1001+ employees
Company mission
To build AI systems that can help humanity understand the world better.
Role
Who you are
- 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
- Expert in Swift, with deep knowledge of SwiftUI and UIKit
- 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
Desirable
- 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
- Sharp product sense, with an ability to empathize with users, anticipate their needs, and translate that into features that delight and deliver value
What the job involves
- 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
- 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
Application process
- 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:
- Coding assessment in a language of your choice
- Systems hands-on: Demonstrate practical skills in a live problem-solving session
- Project deep-dive: Present your past exceptional work to a small audience
- Meet and greet with the wider team
- Our goal is to finish the main process within one week. All interviews will be conducted via Google Meet
Salary benchmarks
Our take
SpaceXAI, formerly XAI, is Elon Musk's venture into the world of artificial intelligence, and like all things Musk, it's going big. It's setting out to build AI that helps humanity understand the universe, and it's starting with Grok, its conversational AI chatbot already integrated into X (formerly Twitter). With access to real-time data and a powerful ecosystem of Musk-led companies, SpaceXAI is certainly pushing towards artificial general intelligence at serious scale.
Like all bold ventures, SpaceXAI has faced its share of controversy, from questions about regulation to the overlap across Musk's businesses (most recently, XAI became a subsidiary of the Musk-owned SpaceX). But fans are still seeing the bigger picture: an interconnected tech ecosystem where AI, social media, and space exploration feed into one another.
The company made headlines in 2024 with its massive "Colossus" supercomputer project, powered by tens of thousands of Nvidia GPUs. While the data center's temporary power setup has faced environmental scrutiny, the scale of ambition is certainly undeniable. From launching tap-to-pay features on X to building one of the most powerful AI training systems on Earth, xAI is moving fast.
Steph
Company Specialist at Welcome to the Jungle
Company
Funding (last 2 of 5 rounds)
Jan 2026
$20bn
SERIES E
Jul 2025
$5bn
GROWTH EQUITY VC
Total funding: $37.1bn
Company 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
Company HQ
Palo Alto, CA
Leadership
Elon Musk
(Founder)Founder, Chairman, CEO, and CTO of SpaceX. CEO and Product Architect of Tesla. Chairman and CTO of X Corp, founder of the Boring Company, co-founder of Neuralink and OpenAI, and president of the Musk Foundation.
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