iOS Software Engineer

ABOUT A1 There are over 5 billion users using basic applications today such email, notes, tasks that are not AI-native. Our mission is to build a proactive smart assistant for everyday users to bring intelligence to conversations, errands, organising and workflows, with minimal prompting. Our product focuses on achieving high reliability for long-running workflows, persistent context, and real-world task completion. The system must handle multi-step reasoning, interact with external tools, and remain reliable despite non-deterministic model behavior. Our objective is to help users complete tasks daily enjoyable with over ~90%* reduced time. ROLE As an iOS Software Engineer, you own the iOS client experience, how AI feels, responds, and performs in users’ hands. This is not a thin integration role. You will build a production-grade iOS application where AI interactions are central to product experience, and performance, reliability, and user trust are critical. FOCUS - Build and maintain iOS applications using Swift and SwiftUI. - Integrate AI-powered features through backend APIs. - Design UX patterns for AI interactions, including loading states, streaming responses, retries, and fallbacks. - Optimize performance, memory usage, and battery efficiency. - Capture user signals and feedback to support AI evaluation and iteration. - Collaborate closely with backend and ML engineers on API design and system behavior. - Maintain high App Store quality, stability, and production reliability. IDEAL EXPERIENCES - 3+ years of iOS development experience using Swift. - Hands-on experience integrating AI-powered features into mobile apps. - Strong understanding of async/await, concurrency, and background tasks. - Solid iOS performance and memory optimization skills. - Experience shipping and maintaining production iOS apps. - Comfort designing for latency, partial failure, and non-deterministic AI behavior. - Exposure to CoreML or light on-device ML. - Familiarity with feature f