Senior iOS Engineer: Real-Time AI & Multimodal

Hark; San Jose (CA); On-site; USD 180,000 - 450,000; Full time

Job summary

Hark is building an iOS app to bring a real-time, multimodal AI agent into users’ pockets. You will own the iOS experience, delivering an instant-feeling app that handles streaming AI responses, integrates voice, text, and vision, and provides a cohesive, high-quality user experience.

In this high-ownership role on a small team, you’ll collaborate with designers, platform engineers, and model developers. Your work will define how users interact with Hark on daily devices and beyond.

Qualifications

• Proficient in Swift and iOS frameworks with strong UI/UX focus.
• Track record of shipping high-performance mobile apps with low latency and memory usage.
• Experience designing for real-time streaming and multimodal interactions with AI services.

Responsibilities

• Build and own the Hark iOS app: architecture, UI, performance, and end-to-end experience.
• Ship features that integrate real-time AI: streaming responses, voice input, tool invocations, and multimodal interactions.
• Collaborate with designers to craft fast, polished, trustworthy interfaces; sweat the details.

Skills

Swift

UIKit

SwiftUI

iOS performance

Async/await & Combine

REST & streaming APIs

End-to-end ownership

5+ years iOS experience

Job description

Hark is building an iOS app to bring a real-time, multimodal AI agent into users’ pockets. You will own the iOS experience, delivering an instant-feeling app that handles streaming AI responses, integrates voice, text, and vision, and provides a cohesive, high-quality user experience.

In this high-ownership role on a small team, you’ll collaborate with designers, platform engineers, and model developers. Your work will define how users interact with Hark on daily devices and beyond.