Senior iOS developer building high - performance streaming apps for CBC/Radio - Canada’s CBC Gem and ICI TOU.TV. Designing reusable components and coordinating Agile product delivery.
About the role
- iOS Developer modernizing Radiotech’s music-learning apps for Gismart, a global mobile app developer. Building scalable Swift architecture and supporting Kotlin Multiplatform migration.
Responsibilities
- Develop, maintain, and modernize existing iOS applications using Swift, SwiftUI, and UIKit
- Define and evolve iOS codebase architecture for scalability, modularization, and maintainability
- Design and implement efficient, testable technical solutions
- Prepare applications for gradual Kotlin Multiplatform adoption
- Migrate selected business logic and shared components to KMP
- Collaborate with Android and other engineers on shared mobile architecture and APIs
- Research technical challenges and propose architectural solutions
- Troubleshoot complex issues and optimize application performance and memory usage
- Perform code reviews and contribute to technical documentation
- Maintain and improve CI/CD and release workflows
- Collaborate with Product Managers on technical solutions, planning, and estimation
- Suggest technical and product improvements
- Use AI coding tools and engineering agents such as Cursor, Claude Code, Codex, or similar
Requirements
- 4+ years of professional iOS development experience
- Strong proficiency in Swift and modern language features
- Strong experience with Swift Concurrency (async/await) and reactive programming such as Combine
- Production experience with both SwiftUI and UIKit
- Strong understanding of iOS architecture, application lifecycle, and platform frameworks
- Experience with MVVM, Clean Architecture, modular architecture, and reusable components
- Ability to independently design and implement complex technical solutions
- Experience with REST APIs, GraphQL, asynchronous networking, and multithreading
- Familiarity with Xcode, Instruments, SPM, CocoaPods, and Fastlane
- Understanding of App Store submission, signing, provisioning, TestFlight, and release management
- Experience with feature flags, remote configuration, and A/B testing
- Experience with CI/CD and automated testing
- Practical experience using AI coding assistants and engineering agents in daily development
Benefits
- Remote-first culture with a flexible working schedule
- Work anywhere in the world, remotely or from a corporate hub
- 100% coworking compensation in Ukraine (except Kyiv) and 50% worldwide
- Free office lunches at company hubs
- 12 public holidays per year for employees working outside Ukraine or Poland
- 100% sick leave compensation
- Partial coverage of medical insurance, sports activities, and therapy costs
- Equipment provided or maintenance costs covered for personal tools
- 70% coverage of professional development courses
- 100% coverage of corporate English courses
- 18 working days of paid vacation and 3 personal days per year
- Extra vacation day for each year at Gismart
- Corporate events and team-building activities across Gismart hubs
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