Mobile iOS Engineer

Company: X
Apply for the Mobile iOS Engineer
Location: London
Job Description:

Overview

In this role you join a small, high-impact team to craft the world’s most valuable AI mobile experience. You blend technical mastery with product insight to deliver fast, pixel-perfect apps that showcase AI capabilities. You own end-to-end development, from architecture to deployment, in a fast, collaborative environment. You’ll work closely with AI researchers and engineers to ship state-of-the-art mobile experiences. This is an opportunity to shape how users interact with AI on devices.

Pay / Benefits

  • equity
  • comprehensive medical, vision, and dental coverage
  • 401(k) retirement plan
  • short & long-term disability insurance
  • life insurance
  • various discounts and perks

Responsibilities

  • Design and ship intuitive mobile UI/UX that integrates AI features
  • Build high-performance, scalable iOS systems with fast responsiveness
  • Own end-to-end feature delivery, including architecture and App Store submission
  • Collaborate with AI researchers and engineers to deploy models globally
  • Optimize memory, CPU, and GPU usage using low-level profiling tools
  • Ensure robust data flow with APIs (REST, gRPC) and AI outputs

Key requirements

  • Expert in Swift with deep knowledge of SwiftUI and UIKit
  • Proficient in performance optimization (memory, CPU, GPU) using low-level tools
  • Experience designing and shipping pixel-perfect mobile UIs for AI
  • Strong concurrency and reactive programming skills (Combine)
  • Experience with API integrations (REST, gRPC) and real-time data flows
  • Ability to own complex features end-to-end from architecture to deployment
  • Strong communication skills
  • High agency and initiative
  • Product-minded with user empathy
  • Swift
  • SwiftUI
  • UIKit

…

Posted: September 21st, 2026