iOS Engineer

aqua-voice; San Francisco (CA); On-site; USD 100,000 - 150,000; Full time

Job summary

Aqua Voice is seeking a skilled developer to lead the creation of a native iOS app focused on voice input. This greenfield project requires a candidate who has shipped apps to the App Store and possesses strong Swift fundamentals, alongside experience in audio processing and real-time streaming. The role involves real-time audio capture and streaming to a transcription backend with a strong emphasis on native performance and system integration. Join us to shape the future of voice interaction on iOS.

Qualifications

• Shipped iOS apps to the App Store.
• Experience with native performance and deep system integration.
• Comfortable working at the system level with extensions and background modes.

Responsibilities

• Own the mobile experience from the ground up.
• Develop a native iOS app with system-level voice input.
• Implement real-time audio capture and streaming.

Skills

Swift fundamentals

Audio capture/processing

Real-time streaming

Tools

AVFoundation

Audio Unit

WebSockets

SwiftUI

UIKit

Job description

About Us

Aqua Voice is building the voice input layer for the age of AI. We train our own models and build deep OS integrations because doing voice well requires controlling the entire stack.

The way people work is changing. IC work is over; you manage AI agents now. This type of work is wonderfully suited for voice.

We aren't building conversational agents. We believe the most natural way to interact with your computer is voice in text out (VITO). We believe that voice belongs at a level above the application, and that a small company can win by pushing the envelope.

We are applying relentless energy to this opportunity and the results so far have been good. We hope you will join us.

The Role

We're building Aqua Voice for iOS. This is a greenfield project — you'll own the mobile experience from the ground up.

What you'll work on:

• Native iOS app with system-level voice input (keyboard extension, Shortcuts, Siri integration)
• Real-time audio capture and streaming to our transcription backend
• Deep iOS integrations

This isn't a wrapper around a web view. We care about native performance and deep system integration.

Stack

• Swift (SwiftUI + UIKit where needed)
• Audio: AVFoundation, Audio Unit, real-time streaming
• Networking: WebSockets, streaming protocols
• System: Keyboard extensions, Shortcuts, accessibility APIs

What We're Looking For

• Shipped iOS apps to the App Store — show us what you've built
• Strong Swift fundamentals
• Experience with audio capture/processing or real-time streaming
• Comfortable working at the system level (extensions, background modes, entitlements)
• Bonus: ML/Core ML experience, accessibility work, or prior voice/speech projects
• You're fast, you ship, you don't need hand-holding