iOS Developer (Swift / UIKit)

We are looking for an experienced iOS Developer to join our team for a long-term collaboration. If you enjoy building high-quality native mobile applications, care about software architecture, performance, and user experience, and are comfortable working across both modern and legacy Apple technologies, we would love to meet you.
 

Who are we?

We are Out Of The Box Systems: a Ukrainian team of passionate, battle-tested engineers and creators united by one goal - delivering real results with clarity, precision, and autonomy.

We specialize in challenging engineering projects, including Rust Development, AI Engineering, Computer Graphics, Automation, and Custom Software Development. We value ownership, accountability, continuous learning, and practical problem-solving over bureaucracy and unnecessary processes.

Our team works remotely with clients from the USA, Canada, Europe, and other international markets.
 

Workload

• Full-time remote collaboration
• Long-term projects
• Direct communication with clients and engineering teams
• Focus on quality, ownership, and continuous improvement
   

Responsibilities

• Design, develop, and maintain native iOS applications using Swift and UIKit
• Participate in architecture discussions and technical decision-making
• Build scalable, maintainable, and well-structured mobile solutions
• Integrate third-party and internal REST APIs
• Work with local data persistence solutions, including Core Data, SQLite, and file-based storage
• Implement responsive user interfaces for different iPhone and iPad screen sizes
• Optimize application performance, stability, memory usage, and user experience
• Debug complex issues using Xcode, Instruments, and Apple profiling tools
• Implement push notifications, deep links, background tasks, and application lifecycle handling
• Participate in code reviews and knowledge-sharing activities
• Collaborate closely with product managers, designers, QA engineers, and other developers
• Contribute to automated testing, deployment, App Store releases, and application maintenance
   

Required Skills

• Strong commercial experience with Swift
• Experience developing native iOS applications using UIKit
• Strong understanding of the iOS SDK, Cocoa Touch frameworks, and application lifecycle
• Experience with Xcode, Instruments, and Apple debugging and profiling tools
• Strong understanding of Async/Await, GCD, concurrency, and multithreading
• Experience integrating REST APIs and implementing networking solutions
• Experience working with Core Data, SQLite, Realm, or file-based storage
• Experience using Git in a collaborative environment
• Understanding of software architecture principles and design patterns
• Experience with MVC, MVVM, Clean Architecture, VIPER, or similar architectural approaches
• Understanding of dependency injection and modular application architecture
• Strong debugging, memory management, and performance optimization skills
• Experience writing unit, integration, or UI tests
• Experience participating in code reviews
• Understanding of Apple Human Interface Guidelines
• Upper-Intermediate English (B2) or higher
   

Preferred Skills

• Experience with SwiftUI and Combine
• Experience publishing and maintaining applications through the App Store
• Experience with App Store Connect and TestFlight
• Understanding of code signing, provisioning profiles, certificates, and application entitlements
• Experience implementing push notifications, deep links, background processing, and in-app purchases
• Experience using Swift Package Manager, CocoaPods, or similar dependency managers
• Experience working with GitHub Actions, Azure DevOps, Bitrise, Fastlane, Xcode Cloud, or similar CI/CD solutions
• Understanding of Keychain, secure storage, certificate management, and encryption
• Experience supporting legacy Objective-C codebases
• Experience integrating analytics, crash reporting, and monitoring tools
• Experience working with cross-functional remote teams
• Experience developing native Android applications using Kotlin
• Familiarity with the Android SDK, Jetpack Compose, and Android application architecture
• Experience with Kotlin Multiplatform or other cross-platform technologies
• Experience with Rust
• Experience with C++
• Experience working with performance-critical mobile applications
• Experience building developer tools, mobile utilities, or creative software products
   

What You Get

• Long-term collaboration with challenging international projects
• Competitive compensation based on your skills and experience
• Flexible remote work environment
• Transparent communication and supportive team culture
• Opportunity to work with experienced engineers across multiple technology domains
• Professional growth through mentorship, feedback, and hands-on experience
• 2-year B2B contract reflecting our long-term commitment to every team member