Senior iOS Engineer - Secure, Global-Scale Mobile

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

Job summary

Experis 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 across the full development lifecycle—from design through App Store release—collaborating with product, engineering, and QA to deliver secure, high-quality mobile experiences.

You’ll design, develop, and ship features for global users, lead implementation of custom iOS features, and ensure performance and security standards.

Qualifications

• Proven iOS development experience with shipped apps.
• Strong Swift and Objective-C skills required.
• Experience with secure, scalable mobile architectures.

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.

Skills

iOS Development

Swift

Objective-C

iOS SDK

MVVM

Clean Architecture

CS Fundamentals

Mobile Security

Performance Optimization

HIG

Xcode

TestFlight

App Store Connect

Git

CI

Jira

Confluence

Tools

Git

CI/CD

Jira

Confluence

TestFlight

Job description

Experis 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 across the full development lifecycle—from design through App Store release—collaborating with product, engineering, and QA to deliver secure, high-quality mobile experiences.

You’ll design, develop, and ship features for global users, lead implementation of custom iOS features, and ensure performance and security standards.