Mobile iOS Engineer (AI)

Location: London, England, United Kingdom

Base salary: £107,000–£262,000 per year

Company

Develops AI systems designed to help humanity pursue knowledge through a small, highly motivated engineering organization.

What you will do

• Design and build intuitive mobile experiences that change how users interact with AI.
• Refine pixels, animations, and interactions to deliver seamless user experiences.
• Build highly performant systems with a focus on memory, CPU, GPU, and response-time optimization.
• Drive technical and product decisions in collaboration with AI researchers and engineers.
• Integrate and deploy state-of-the-art AI models globally.
• Own complex features end to end, from architecture through App Store deployment.

Requirements

• Expert-level Swift development with deep knowledge of SwiftUI and UIKit.
• Experience designing and shipping intuitive, pixel-perfect iOS interfaces.
• Strong skills in performance optimization using low-level tools for memory, CPU, and GPU analysis.
• Experience with concurrency and reactive programming using Combine.
• Experience building high-throughput integrations with REST, gRPC, or AI model outputs.
• Ability to work across architecture, implementation, scalability, and App Store deployment.

Nice to have

• Deep expertise in the Apple ecosystem and related development tools.
• Rust experience for backend components.
• AVFoundation experience with real-time audio processing.
• Experience shipping standout applications or product features.
• Strong product sense and the ability to translate user needs into valuable features.

Culture & Benefits

• Small, flat, high-impact organization focused on engineering excellence.
• Hands-on work with direct contribution to the company mission.
• Equity alongside the base salary.
• Comprehensive healthcare and dental coverage, cash plan, income protection, and life insurance.
• Additional discounts and perks.