Mobile iOS Engineer

Salary: £58,000 - 98,000 per year

Requirements:

• We are looking for an exceptional iOS engineer with deep expertise in Swift, SwiftUI, and UIKit.
• We need strong experience in performance optimization across memory, CPU, and GPU using low-level tools.
• We expect experience designing and shipping intuitive, pixel-perfect mobile UIs, especially for AI-driven experiences.
• We require proficiency in concurrency and reactive programming, including Combine, for responsive real-time applications.
• We value experience building high-throughput integrations with APIs such as REST and gRPC, or with AI model outputs.
• We want someone capable of owning complex features end-to-end, from architecture through App Store deployment, with a focus on speed and scalability.
• We prefer deep expertise in the Apple ecosystem and related development tools.
• We prefer experience with Rust for backend components.
• We prefer experience with AVFoundation for real-time audio processing.
• We prefer a track record of shipping standout apps or standout features within apps.
• We look for strong product sense, including the ability to empathize with users and translate needs into delightful features.
• We expect excellent communication skills, strong prioritization, and a hands-on work style.

Responsibilities:

• We will have you dream up and craft delightful, intuitive user experiences for AI on mobile.
• We will have you obsess over every pixel, animation, and interaction to make the experience magical and seamless.
• We will have you build blazing-fast, highly performant systems where every millisecond counts.
• We will have you drive technical and product decisions in collaboration with AI researchers and engineers.
• We will have you deploy state-of-the-art models globally and contribute directly to the company mission.
• We expect you to work hands-on in a small, high-impact team and own complex features end-to-end.

Technologies:

• AI
• Backend
• Mobile
• REST
• Rust
• Swift
• UIKit
• gRPC
• iOS
• Excel
• Flow

More:

We are SpaceXAI, and our mission is to create AI systems that can accurately understand the universe and help humanity in its pursuit of knowledge. We are a small, highly motivated team focused on engineering excellence, curiosity, and challenging work in a flat organizational structure where initiative and consistent delivery are valued.

• a base salary of 107,000 to 262,000 GBP
• equity
• comprehensive healthcare and dental coverage
• cash plan
• income protection
• life insurance
• various discounts and perks

We are an equal opportunity employer.