Senior iOS Engineer: Build Secure, Scalable Apps

Experis UK; Reading; On-site; GBP 70,000 - 110,000; Full time

Job summary

Experis UK is seeking a Senior iOS Developer to join a leading cyber software client to build and evolve iOS applications. You’ll be a hands-on engineer spanning design through App Store release, collaborating with product, engineering, and QA to deliver secure mobile experiences.

You’ll lead feature development, implement modern iOS architectures (MVVM, Clean Architecture), optimize performance, ensure security, and contribute to L3 support.

Qualifications

• Proven experience as an iOS Developer with shipped production apps.
• Strong knowledge of Swift, Objective-C, and the iOS SDK.
• Experience with modern iOS architectures (e.g. MVVM, Clean Architecture).
• Solid understanding of CS fundamentals, including algorithms and data structures.
• Knowledge of mobile security, performance optimization, and Apple HIG.
• Experience with Xcode, TestFlight, App Store Connect, Git, CI, Jira, and Confluence.

Responsibilities

• Design, develop, and deliver new features iOS applications at global scale
• Lead the implementation of custom iOS features.
• Collaborate with Product Managers, Tech Leads, and QA to plan, build, and ship features.
• Ensure high standards of quality, performance, and security.
• Debug, track, and resolve defects; contribute to L3 support when required.
• Help drive innovation within the iOS platform and development practices

Skills

iOS Development

Swift

Objective-C

MVVM

Clean Architecture

Security Best Practices

Performance Optimization

CI/CD

Tools

Xcode

TestFlight

App Store Connect

Git

CI

Jira

Confluence

Job description

Experis UK is seeking a Senior iOS Developer to join a leading cyber software client to build and evolve iOS applications. You’ll be a hands-on engineer spanning design through App Store release, collaborating with product, engineering, and QA to deliver secure mobile experiences.

You’ll lead feature development, implement modern iOS architectures (MVVM, Clean Architecture), optimize performance, ensure security, and contribute to L3 support.