Senior iOS Developer

Job Description

iOS Developer – AI Voice & AI Meal Scanning

About Us

At H&N Research Inc., we build innovative, mission-driven mobile applications that improve lives through cutting-edge mobile and AI technologies. Our products combine health, nutrition, and personalization using advanced on-device intelligence. We're looking for a skilled iOS Developer who is passionate about AI-driven user experiences, particularly voice intelligence and AI-based meal recognition.

Role Overview

We are seeking an experienced iOS Developer who will play a key role in designing and building intelligent iOS applications featuring AI voice interaction and AI-powered meal scanning. You will work on end-to-end iOS development while integrating machine learning models for voice processing, food recognition, and nutritional analysis. This role is hands-on and requires strong collaboration with AI, backend, and product teams.

Key Responsibilities

iOS Development

• Design, develop, and maintain high-performance iOS applications using Swift, SwiftUI, and UIKit.
• Implement clean, modular, and scalable iOS architecture using MVVM / Clean Architecture principles.
• Ensure app reliability, performance, and responsiveness across iPhone and iPad devices.

AI Voice Features

• Develop AI-powered voice features, including voice input, speech-to-text, and conversational interfaces.
• Integrate Apple Speech framework, AVFoundation, and third-party AI voice SDKs when required.
• Collaborate with backend/AI teams to integrate LLM-based voice assistants, intent recognition, and natural language understanding.
• Optimize voice interactions for low latency and on-device processing where possible.

AI Meal & Food Scanning

• Implement AI-based meal scanning using the device camera to recognize food items and meals.
• Integrate Core ML, Vision framework, and custom-trained ML models for food recognition.
• Work with nutrition datasets to map recognized foods to calorie and macro/micronutrient values.
• Handle image preprocessing, confidence scoring, and user correction flows for improved accuracy.

AI & ML Integration

• Deploy and optimize Core ML models for on-device inference.
• Integrate cloud-based AI services when required, ensuring secure data transfer and privacy compliance.
• Collaborate with data scientists to improve model accuracy, performance, and lifecycle management.
• Implement analytics to track AI feature performance and user engagement.

Platform & Product Collaboration

• Integrate RESTful and GraphQL APIs with robust error handling.
• Work closely with product managers and designers to translate AI-driven concepts into intuitive UX.
• Participate in Agile/Scrum ceremonies, sprint planning, and technical discussions.
• Ensure compliance with Apple's App Store guidelines, especially around privacy and camera/microphone usage.

Qualifications

• 5+ years of professional iOS development experience.
• Strong expertise in Swift, SwiftUI, UIKit, and iOS frameworks.
• Proven experience implementing AI voice features (Speech-to-Text, voice commands, conversational AI).
• Hands-on experience with AI-based image recognition, preferably food or meal scanning.
• Strong knowledge of Core ML, Vision, and on-device ML workflows.
• Experience integrating backend AI/ML APIs and handling large datasets.
• Solid understanding of iOS performance optimization, memory management, and concurrency.
• Familiarity with App Store submission, TestFlight, and Apple review processes.

Nice-to-Have Skills

• Experience with HealthKit, nutrition, wellness, or fitness applications.
• Familiarity with LLMs, OpenAI-style APIs, or conversational AI platforms.
• Experience with AVFoundation, camera pipelines, and real-time image processing.
• Knowledge of Combine or async/await for modern concurrency.
• Experience with Firebase, analytics, push notifications, and A/B testing.
• Background in AI ethics, data privacy, and user consent handling.

What We Offer

• Work on cutting-edge AI-powered mobile experiences.
• Opportunity to build and evolve intelligent features used by real users daily.
• Collaborative, innovation-driven team culture.
• Flexible remote work environment.
• Career growth opportunities in AI-focused mobile development.

Industry: IT System Custom Software Development

Employment Type: Full-time