Role: Engineering

Rate: $90.00–$90.00 USD/hr

Skills: iOS Swift

Job Description: Senior iOS/MacOS Engineer

Location: Remote (US)

Department: Technology

Reports To: CTO

Background

Open Sesame Media is looking for a Senior iOS/MacOS Engineer to join our growing technical team. We are a group of pioneers—people who love doing things that haven’t been done before and have a deep love for music.

You will be working on our client side application, that is loved by musicians and creators globally. This role is a one-of-a-kind opportunity to build the future of collaboration between the creative community, helping to foster a pro-social, pro-cooperative communal experience for the entire world. No pressure.

What You’ll Do

• Design, develop, and maintain high-performance applications for iOS and macOS.
• Build modern user interfaces using SwiftUI, while maintaining and integrating components using UIKit (iOS) and AppKit (macOS) where necessary.
• Implement scalable and maintainable solutions using Clean Architecture with MVVM.
• Develop reusable and modular components across applications.
• Integrate third-party C/C++ libraries and SDKs with Swift applications.
• Implement and maintain networking layers, REST API integrations, and WebSocket communication.
• Use Combine and Swift Concurrency (async/await) for asynchronous and reactive programming.
• Optimize applications for performance, memory usage, and responsiveness.
• Collaborate closely with product, design, and backend teams.
• Perform code reviews and enforce engineering best practices.
• Maintain automated testing and CI/CD pipelines.
• Mentor engineers and contribute to architectural and technical decisions.

What You Will Need

• 5+ years of professional experience developing iOS applications.
• Strong proficiency in Swift.
• Extensive experience with SwiftUI.
• Solid experience with UIKit (iOS) and AppKit (macOS).
• Strong understanding of Clean Architecture and MVVM.
• Experience integrating C/C++ libraries with Swift applications.
• Experience building networking layers and REST API integrations.
• Experience implementing WebSocket-based communication.
• Strong experience with Combine and Swift Concurrency (async/await).
• Experience using Git and collaborative development workflows.
• Experience writing unit tests and UI tests.

Preferred Experience

• Experience working with Apple audio frameworks such as AVFoundation.
• Familiarity with Core Audio APIs for low-level audio processing.
• Experience using AudioToolbox and AudioUnit for advanced audio handling.
• Experience building applications involving audio playback, recording, or real-time audio processing.

Networking Technologies

• URLSession
• URLRequest / URLResponse
• Network framework (NWConnection and related APIs)
• URLSessionWebSocketTask
• RESTful API integration
• JSON encoding/decoding using Codable
• Secure network communication and authentication flows
• Real-time communication using native WebSocket APIs

Release & Distribution Experience

• Publishing applications to the Apple App Store.
• Managing beta testing through TestFlight.
• Preparing and distributing macOS applications using DMG packages.
• Understanding code g, provisioning profiles, notarization, and macOS distribution requirements.

Technical Skills

• Languages: Swift, C, C++
• UI Frameworks: SwiftUI, UIKit, AppKit
• Architecture: Clean Architecture, MVVM
• Concurrency: Combine, Swift Concurrency (async/await)
• Networking: URLSession, URLSessionWebSocketTask, Network Framework
• Audio: AVFoundation, Core Audio
• Platforms: iOS, macOS
• Tools: Xcode, Git, Swift Package Manager, CI/CD tools

The Unicorn List

• No Ego.
• Innovator Spirit: A genuine desire to be an innovator, not just an implementer of existing standards.
• Passion for Music.
• Futurism: A love for holograms and next-gen visual tech.

Social Theory: A strong passion for ‘Social Contagion’ Theory and a sincere desire to use technology to create a pro-social, pro-cooperative world.

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