Senior iOS Mobile Engineer (124)
Design, develop, and maintain high-quality, scalable iOS applications and new features. Collaborate with cross-functional teams to translate business requirements into technical solutions and optimize application performance.
- Hybrid
- Toronto, ON
- Posted Jul 29, 2026
- Apply by Aug 28, 2026
- 1 position
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Job summary
Our client is seeking a Senior iOS Mobile Engineer to design, develop, and maintain scalable, high-performing iOS applications while collaborating with cross-functional teams to deliver exceptional mobile experiences. (Toronto, Hybrid, 2 days in office/wk) Must Have Skills 9–10 years of hands-on iOS application development experience. Strong proficiency in Swift, including protocols, generics, and functional programming concepts. Experience building applications using SwiftUI and modern iOS frameworks. Expertise with Xcode for development, debugging, performance optimization, and profiling. Experience integrating REST APIs, GraphQL, JSON, and third-party services. Knowledge of CoreData, Keychain, and UserDefaults for data persistence. Experience with XCTest, XCUI, and Test-Driven Development (TDD). Strong Git-based source control and collaborative development practices. Experience using Xcode Instruments and Memory Graph to analyze and optimize application performance. Strong understanding of MVC, MVVM, and Clean Architecture design patterns. Excellent problem-solving, debugging, and troubleshooting skills. Proven ability to work independently with strong ownership and accountability. Nice to Have Skills Backend development experience. Passion for learning and adopting emerging iOS technologies. Responsibilities Design, develop, and maintain high-quality iOS applications and new features. Collaborate with product managers, designers, QA engineers, and fellow developers to deliver exceptional user experiences. Translate business requirements into scalable, maintainable technical solutions. Work effectively with cross-functional teams while managing dependencies and resolving technical challenges independently. Participate in code reviews and contribute to engineering best practices. Identify, troubleshoot, and resolve application performance, stability, and usability issues. Continuously improve application quality, performance, and maintainability. #D480
What you’ll do
Design, develop, and maintain high-quality, scalable iOS applications and new features. Collaborate with cross-functional teams to translate business requirements into technical solutions and optimize application performance.
Requirements
Requires 9-10 years of iOS development experience with strong proficiency in Swift, SwiftUI, and modern iOS frameworks. Expertise in architecture patterns like MVVM and Clean Architecture, as well as TDD and performance profiling, is essential.
Other relevant skills
Identified from the job description. Confirm important requirements above.
- Swift
- SwiftUI
- Xcode
- REST APIs
- GraphQL
- CoreData
- XCTest
- XCUI
- TDD
- Git
- MVC
- MVVM
- Clean Architecture
- Xcode Instruments
- Memory Graph
- JSON
Job areas
- Software
- Technology
- Engineering
Additional details
- Minimum experience
- 10+ years
- Apply by
- Aug 28, 2026
- Posting language
- English
- Working hours
- 40 hours per week
- Office presence
- 2 days per week
- Seniority
- Mid-Senior level
- Application method
- Direct apply is available