Senior Mobile Developer, iOS

Signify

full-time

Posted on: 9/27/2025

Location Type: Remote

Location: Remote • 🇬🇧 United Kingdom

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Senior

AndroidFlutteriOSJenkinsObjective-CReactReact NativeSwift

About the role

Design, develop, and maintain critical mobile components in both Swift and Objective-C
Explore the depths of the iOS platform, including low-level APIs, performance optimization, memory management, and background processing
Build and maintain a robust testing suite (unit, integration, and E2E) and fully automate build, testing, and release processes using CI/CD pipelines
Investigate and solve unique and challenging technical problems that require deep research and first-principles thinking
Act as the subject matter expert for all things iOS, providing technical guidance and helping to shape long-term mobile strategy
Work closely with Android, web, backend, and product teams to ensure seamless integration of iOS components
Create and maintain clear, comprehensive technical documentation for iOS products
Collaborate with the Android team to ensure consistency and architectural alignment across platforms

Extensive professional experience in native iOS development with strong proficiency in both Swift and Objective-C
Demonstrable experience building foundational, reusable mobile components, libraries, or frameworks
A strong understanding of API design principles and a passion for creating clean, maintainable, and robust code
Deep knowledge of mobile testing methodologies and frameworks (e.g., XCTest, XCUITest)
Hands-on experience implementing and managing CI/CD pipelines for mobile development (e.g., GitHub Actions, Jenkins, Fastlane)
Exceptional problem-solving skills, a curious mindset, and meticulous attention to detail
Excellent communication and documentation skills, with the ability to collaborate effectively in a cross-functional team environment
Experience with cross-platform frameworks (e.g., React Native, Flutter, Xamarin) and/or native Android development is a significant plus

Benefits

Stock Options
Annual Performance Bonus or Commissions
Pension matched up to 8%
‘Day one’ access to great health, dental and optical insurance scheme
Generous annual leave plus public holidays
Cycle to Work Scheme
Enhanced maternity and paternity leave (12 weeks full-pay for mums & dads, plus 12 weeks half-pay for mums)
Regular paid social events organized by our social committee
On-Demand Therapy for all employees & their dependents
Dedicated learning budget through Learnerbly

Tip: use these terms in your resume and cover letter to boost ATS matches.

SwiftObjective-CiOS developmentAPI designmobile testing methodologiesXCTestXCUITestCI/CD pipelinesGitHub ActionsJenkins

problem-solvingcurious mindsetattention to detailcommunicationdocumentationcollaboration