Senior iOS Engineer - Global, Security-Focused Apps

Experis; Slough; On-site; GBP 70,000 - 100,000; Full time

Job summary

Experis is seeking a Senior iOS Developer in the United Kingdom to build and evolve iOS applications. You’ll work across the full development lifecycle—from feature design to App Store release—collaborating with product, engineering, and QA teams to deliver secure, high-quality mobile experiences.

You’ll design, develop, and deliver new features for iOS applications at global scale, lead the implementation of custom iOS features, and ensure top quality, performance, and security.

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 (MVVM, Clean Architecture).
• Solid understanding of CS fundamentals, algorithms and data structures.
• Knowledge of mobile security, performance optimization, and Apple HIG.

Responsibilities

• Design, develop, and deliver features for iOS applications at global scale.
• Lead implementation of custom iOS features.
• Collaborate with Product Managers, Tech Leads, and QA to plan and ship features.
• Ensure high standards of quality, performance, and security.

Skills

Swift

Objective-C

iOS SDK

MVVM

Clean Architecture

CS fundamentals

Security

Xcode

TestFlight

App Store Connect

Git

CI

Jira

Confluence

Tools

Xcode

TestFlight

App Store Connect

Git

CI

Jira

Confluence

Job description

Experis is seeking a Senior iOS Developer in the United Kingdom to build and evolve iOS applications. You’ll work across the full development lifecycle—from feature design to App Store release—collaborating with product, engineering, and QA teams to deliver secure, high-quality mobile experiences.

You’ll design, develop, and deliver new features for iOS applications at global scale, lead the implementation of custom iOS features, and ensure top quality, performance, and security.