Senior iOS Mobile Engineer (124)
About the role
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
Not the right fit? Search for iOS Mobile Engineer jobs in Toronto, Ontario, Canada
About JSG (Johnson Service Group, Inc.)
Johnson Service Group, Inc. (JSG) is a leader in the staffing and consulting services industry, with 40 years of experience investing in people and companies. We can be found locally in more than 30 offices throughout the United States and Canada and make connections throughout North America. JSG continues to work diligently to offer our clients and candidates world-class service and diversified offerings to fit their evolving needs. Which is why we have recently expanded our consulting services to include information technology consulting in addition to our wide array of staffing services.
But don’t just trust us – let our accolades tell the story. For the past several years, JSG has been named to a variety of prominent Staffing Industry Analyst (SIA) award lists including Largest U.S. Staffing Firms, Largest Canadian Staffing Firms, Fastest-Growing U.S. Staffing Firms, and Largest U.S. Engineering Staffing Firms.
Working with JSG, applicants regularly have hundreds of active job opportunities across many industry verticals and geographic regions.
JSG offers numerous customized staffing and consulting services that are tailored to meet the specific needs of each client individually. These services include providing qualified candidates on a Contract, Temporary, Contract to Direct and Direct Hire basis. IT Consulting Services, Payroll Services, 1099 Management, and Managed Staffing Programs are available as well.
Similar Jobs
Senior iOS Mobile Engineer (124)
About the role
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
Not the right fit? Search for iOS Mobile Engineer jobs in Toronto, Ontario, Canada
About JSG (Johnson Service Group, Inc.)
Johnson Service Group, Inc. (JSG) is a leader in the staffing and consulting services industry, with 40 years of experience investing in people and companies. We can be found locally in more than 30 offices throughout the United States and Canada and make connections throughout North America. JSG continues to work diligently to offer our clients and candidates world-class service and diversified offerings to fit their evolving needs. Which is why we have recently expanded our consulting services to include information technology consulting in addition to our wide array of staffing services.
But don’t just trust us – let our accolades tell the story. For the past several years, JSG has been named to a variety of prominent Staffing Industry Analyst (SIA) award lists including Largest U.S. Staffing Firms, Largest Canadian Staffing Firms, Fastest-Growing U.S. Staffing Firms, and Largest U.S. Engineering Staffing Firms.
Working with JSG, applicants regularly have hundreds of active job opportunities across many industry verticals and geographic regions.
JSG offers numerous customized staffing and consulting services that are tailored to meet the specific needs of each client individually. These services include providing qualified candidates on a Contract, Temporary, Contract to Direct and Direct Hire basis. IT Consulting Services, Payroll Services, 1099 Management, and Managed Staffing Programs are available as well.