Senior iOS Developer – AI/ML, Apple Health, and In-App Purchases

Overview

Senior iOS Developer – AI/ML, Apple Health, and In-App Purchases. At H&N WORK, we create innovative, mission-driven products that improve lives through advanced mobile technology. We are a compact, agile team that values innovation, ownership, and high-quality execution. As our key iOS lead, you will define the architecture, drive technical decisions, and guide the mobile product strategy for years to come.

About Us

At H&N WORK, we create innovative, mission-driven products that improve lives through advanced mobile technology. We’re a compact, agile team that values innovation, ownership, and high-quality execution. As our key iOS lead, you will define the architecture, drive technical decisions, and guide the mobile product strategy for years to come.

Responsibilities

• Lead the iOS architecture — choose frameworks, design patterns, and scalability strategies.
• Develop and maintain apps using Swift, SwiftUI, Combine, and async/await.
• Implement Apple HealthKit integrations for secure health/fitness data import and processing.
• Design and integrate StoreKit In-App Purchase flows (subscriptions, consumables, non-consumables) with full validation and analytics tracking.
• Deploy Core ML or TensorFlow Lite models for on-device AI/ML features such as personalization, prediction, and data analysis.
• Establish and enforce coding standards, architecture guidelines, and CI/CD best practices.
• Collaborate with product and design teams in an Agile/Scrum environment to plan and execute feature roadmaps.
• Integrate RESTful and GraphQL APIs with robust error handling and offline-first data strategies.
• Optimize performance using profiling tools and implement caching strategies for low-latency user experiences.
• Lead TestFlight testing, App Store submissions, and ensure compliance with Apple’s guidelines.
• Mentor and guide junior/mid-level iOS engineers; conduct code reviews and technical workshops.

Qualifications

• 7+ years professional experience in iOS development, with 2+ years in a technical leadership or architecture role.
• Expert in Swift, SwiftUI, Combine, and async/await concurrency.
• Proven track record with Apple HealthKit integrations.
• Strong expertise with In-App Purchases using StoreKit, including subscription management and server-side receipt validation.
• Practical experience with Core ML, on-device AI/ML workflows, and data privacy best practices.
• Mastery of UIKit, Core Data, concurrency management, and offline-first application design.
• Experience with CI/CD for mobile (GitHub Actions, Bitrise, Jenkins).
• Strong Agile/Scrum experience and ability to work cross-functionally.
• Excellent problem-solving, communication, and mentorship skills.

Nice-to-Have Skills

• Knowledge of Objective-C for legacy maintenance.
• Experience with Firebase, push notifications, deep linking, and analytics (Firebase Analytics, Amplitude).
• Familiarity with healthcare, wellness, or nutrition mobile apps.
• Cloud integration knowledge (AWS Amplify, Azure Mobile Apps, or custom APIs).

What We Offer

• Full technical ownership of the iOS platform.
• Opportunity to design the long-term iOS architecture and technology stack.
• Work on impactful projects with state-of-the-art iOS technologies and AI/ML integrations.
• Flexible remote work culture and a collaborative team environment.
• Career growth path toward Mobile Architect or Head of Mobile Engineering.

Details

• Seniority level — Mid-Senior level
• Employment type — Full-time
• Job function — Engineering and Information Technology
• Industries — IT System Custom Software Development

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