Jobs in Doncaster, United States

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Freelance Senior iOS Developer (Apple Ecosystem) – Software – Remote
Daily rate: £350 – £450 (inside IR35)
Duration: 3 months
Start: ASAP

My client is looking for a highly skilled and experienced Senior iOS Developer to join our team on a freelance basis. You will be responsible for designing, developing, and maintaining advanced applications for the iOS platform. You should have a deep understanding of the Apple ecosystem, from iPhones and iPads to watchOS and iOS frameworks, and a strong grasp of best practices in mobile architecture, user experience, and code quality.

This role is ideal for a proactive and self-motivated developer who thrives in a remote, collaborative environment and can independently drive projects to completion.

Key Responsibilities

• Develop and maintain iOS applications using Swift and Objective-C
• Collaborate with product managers, designers, and other developers to define, design, and ship new features
• Write clean, scalable, and maintainable code following Apple’s Human Interface Guidelines
• Identify and fix bugs and performance bottlenecks
• Integrate with RESTful APIs and third-party libraries/services
• Ensure the performance, quality, and responsiveness of applications
• Participate in code reviews and contribute to continuous improvement of development processes
• Stay up to date with the latest iOS development trends and technologies

Required Skills & Qualifications

• 5+ years of professional iOS development experience
• Expert-level knowledge of Swift and strong experience with Objective-C
• Deep understanding of UIKit, CoreData, CoreAnimation, CoreLocation, AVFoundation, and other native frameworks
• Strong knowledge of Xcode, debugging tools, and performance optimization
• Experience with modern architectural patterns such as MVVM, VIPER, or Clean Architecture
• Familiarity with SwiftUI and Combine is a plus
• Strong understanding of Apple’s design principles and interface guidelines
• Experience integrating with APIs, Firebase, and third-party SDKs
• Familiarity with Unit Testing, UI Testing, and CI/CD pipelines
• Comfortable working independently and managing time across multiple priorities

Preferred Qualifications

• Published one or more iOS apps in the App Store
• Experience with other Apple platforms (, watchOS, tvOS, macOS) is a bonus
• Experience in agile or scrum development environments
• Familiarity with Git, Jira, and project collaboration tools

*Rates depend on experience and client requirements