Senior iOS Engineer: Global-Scale, Security-Focused Apps

Experis; Park Central; On-site; GBP 65,000 - 90,000; Full time

Job summary

Experis is seeking a Senior iOS Developer to join a leading cyber software client to build and evolve secure iOS apps. You’ll work across the full development lifecycle—from design to App Store release—collaborating with product, engineering, and QA teams to deliver secure, high‑quality mobile experiences.

You’ll bring proven iOS experience, Swift and Objective-C skills, and familiarity with modern architectures (MVVM, Clean Architecture).

Qualifications

• Shipped production iOS apps.
• Strong Swift and Objective-C skills.
• Experience with iOS architectures (MVVM, Clean Architecture).
• Solid CS fundamentals (algorithms, data structures).
• Knowledge of mobile security and performance optimization.

Responsibilities

• Design, develop, and deliver new iOS features 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

Swift

Objective-C

iOS SDK

MVVM

Clean Architecture

CS fundamentals

Security best practices

Performance optimization

Apple HIG

Problem-solving

Tools

Xcode

TestFlight

App Store Connect

Git

Jira

Confluence

Job description

Experis is seeking a Senior iOS Developer to join a leading cyber software client to build and evolve secure iOS apps. You’ll work across the full development lifecycle—from design to App Store release—collaborating with product, engineering, and QA teams to deliver secure, high‑quality mobile experiences.

You’ll bring proven iOS experience, Swift and Objective-C skills, and familiarity with modern architectures (MVVM, Clean Architecture).