Mobile Engineer (iOS)

Onhires
Europe +7 more
RemoteCareer-pivot friendly

Who this role is best for

A natural match if you have mid-level iOS development experience with AI integration. Candidates should thrive in cross-functional teams focused on high-reliability productivity apps across global locations.

Best fit for

  • Mid-level iOS developers with AI integration experience in productivity tools
    — “3+ years of iOS development experience using Swift
  • Professionals comfortable designing for non-deterministic AI behavior in production apps
    — “Comfort designing for latency, partial failure, and non-deterministic AI behavior
  • Engineers with proven ability to optimize memory and battery efficiency in complex apps
    — “Optimize performance, memory usage, and battery efficiency

Things to consider

  • High expectations for production reliability with minimal user input handling
    — “maintain high App Store quality, stability, and production reliability

How to stand out

  • Highlight specific AI UX patterns implemented in past iOS applications
    — “Design UX patterns for AI interactions (loading states, streaming responses, retries, fallbacks)
  • Emphasize experience with on-device ML frameworks like TensorFlow Lite
    — “Exposure to CoreML or light on-device ML
  • Showcase ability to balance rapid execution with quality assurance in production apps
    — “operate with high talent density, collective decision-making, and rapid execution
Pace · Fast PacedCollaboration · MediumAutonomy · MediumDecision Impact · TeamLevel · Mid

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • Built and maintained iOS applications
  • Integrated AI-powered features
  • Optimized performance
Typical background
3+ years of iOS development experience using SwiftHands-on experience integrating AI-powered features into mobile apps

Skills & requirements

Required

Ios DevelopmentSwiftSwiftuiAI IntegrationUX DesignPerformance Optimization

Preferred

CoremlTensorflow LiteFeature Flags

Stack & domain

Ios Development Using Swift And SwiftuiAi-powered Feature IntegrationUX Design For AI InteractionsPerformance OptimizationMemory OptimizationProduction ReliabilityAPI Design And System BehaviorApp Store QualityAI UX PatternsUser Trust ConsiderationsAi-native Productivity ApplicationsAI InteractionsAI WorkflowsAI Evaluation And IterationAI Behavior

About the role

Original posting from Onhires via Ashby

We’re hiring on behalf of A1, a high‑talent team building the next generation of AI‑native productivity applications. Their mission is to replace repetitive digital work with AI that can reliably complete real tasks for everyday users.

Rather than building another chatbot, A1 is creating long‑running AI workflows that manage conversations, coordinate actions, maintain context, and interact with external services — all with minimal user input. The product is designed to deliver high reliability, persistent context, and real‑world task completion, helping users save ~90% of their time on everyday tasks.

ROLE: IOS SOFTWARE ENGINEER

As an iOS Software Engineer, you will own the iOS client experience end‑to‑end. This is not a thin integration role — you will build a production‑grade iOS application where AI interactions are central to the product. Performance, reliability, and user trust will be your top priorities.

FOCUS AREAS

  • Build and maintain iOS applications using Swift and SwiftUI.
  • Integrate AI‑powered features through backend APIs.
  • Design UX patterns for AI interactions (loading states, streaming responses, retries, 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 EXPERIENCE

  • 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 flags or remote configuration systems.
  • Strong intuition for AI UX patterns and user trust considerations.

EXPECTED OUTCOMES

  • Stable, smooth, and reliable iOS applications for real‑world use.
  • Optimized performance: responsive, low‑latency, efficient on memory and CPU.
  • Production issues detected early, monitored effectively, and resolved with clear root‑cause analysis.

TECH STACK

  • Swift
  • SwiftUI
  • Swift Package Manager (SPM)
  • SQL / NoSQL
  • TensorFlow Lite (on‑device inference)

HOW THEY WORK

A1 believes the best products are built by small, world‑class teams. They operate with high talent density, collective decision‑making, and rapid execution — balancing quality with speed. Joining this team means bringing structure, exercising judgment, and executing independently to deliver a truly magical product into users’ hands.

INTERVIEW PROCESS

  • 3–4 interviews maximum.
  • Conducted virtually and/or onsite.
  • Applications evaluated directly by technical team members.
  • Transparent and efficient process with prompt decisions.
  • Successful candidates will receive not just a job offer, but an invitation to join a mission‑driven team bringing AI to billions globally.

Source: Onhires careers (Ashby)

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