About this opportunity
PB consulting lists this Senior IOS Engineer opportunity in Willowbrook, Illinois. Review the employer’s description below for duties, qualifications and application requirements.
Job description
Job Overview
We are looking for an experienced Senior iOS Engineer to design, develop, test, and maintain high-quality iOS applications for iPhone and iPad. The ideal candidate will have strong expertise in Swift, iOS development frameworks, application architecture, and mobile performance optimization.
You will collaborate with product managers, UI/UX designers, QA engineers, and backend developers to deliver scalable, secure, and user-friendly mobile applications. The candidate should have a strong understanding of Apple's development ecosystem, coding best practices, and the complete mobile application development lifecycle.
Roles and Responsibilities
Design, develop, and maintain robust iOS applications using Swift and Apple's development frameworks.
Build responsive, user-friendly interfaces using SwiftUI and UIKit.
Develop clean, reusable, and maintainable code following established coding standards and best practices.
Implement application architecture patterns such as MVVM, MVC, or Clean Architecture.
Integrate RESTful APIs and backend services to support application functionality.
Work with asynchronous programming, concurrency, and data handling to ensure smooth application performance.
Implement secure authentication, data storage, and appropriate application security practices.
Troubleshoot, debug, and resolve technical issues, crashes, and performance bottlenecks.
Write unit tests and support UI testing to maintain application quality and reliability.
Collaborate with cross-functional teams to define requirements, estimate development efforts, and deliver features on schedule.
Participate in code reviews, technical discussions, and architectural decisions.
Manage application releases, provisioning profiles, certificates, and deployments through App Store Connect.
Stay updated with the latest iOS technologies, Apple platform updates, and mobile development best practices.
Mentor junior developers and contribute to improving development processes and engineering standards.
Required Skills and Qualifications
5–8 years of professional experience in iOS application development.
Strong proficiency in Swift and a solid understanding of object-oriented and protocol-oriented programming.
Hands-on experience with UIKit and SwiftUI.
Strong understanding of iOS application architecture, including MVVM, MVC, or Clean Architecture.
Experience integrating REST APIs, JSON, and third-party SDKs.
Knowledge of asynchronous programming, Grand Central Dispatch (GCD), and Swift Concurrency using async/await.
Experience with local data persistence using Core Data, SwiftData, UserDefaults, or SQLite.
Familiarity with dependency management tools such as Swift Package Manager and CocoaPods.
Experience with Git and collaborative development workflows.
Strong understanding of memory management, ARC, application lifecycle, and performance optimization.
Experience with unit testing, debugging, and crash reporting tools.
Knowledge of iOS security practices, including Keychain, secure data handling, and authentication mechanisms.
Experience with App Store deployment, provisioning profiles, code signing, and release management.
Strong analytical, problem-solving, communication, and collaboration skills.
Preferred Qualifications
Experience with Combine and reactive programming concepts.
Familiarity with CI/CD pipelines and automated build and deployment tools.
Experience with tools such as Fastlane, Xcode Cloud, or Jenkins.
Knowledge of push notifications, deep linking, and background processing.
Experience implementing accessibility standards and responsive UI designs.
Familiarity with Agile/Scrum development methodologies.
Experience profiling applications using Instruments and diagnosing production issues.
Previous experience mentoring developers or contributing to technical design decisions.
Education
Bachelor's degree in Computer Science, Information Technology, Software Engineering, or a related field is preferred.
Equivalent practical experience and demonstrated iOS development expertise will also be considered.
Who can apply
Review the original listing for work authorization, qualifications and employer requirements.