iOS Developer - contract

Location: London, UK (3 days onsite)

Contract Duration: Initial contract until December 2026

Rate: Up to £500/day Inside IR35

Overview

We are seeking an experienced iOS Engineer to join a high-performing mobile engineering team delivering enterprise-scale digital products used by millions of customers globally. This role offers the opportunity to work on modern, customer-facing mobile applications within a collaborative Agile environment.

The successful candidate will contribute to the development of scalable, high-quality iOS applications while working closely with product, design, QA, and engineering teams.

Key Responsibilities

• Design, develop, and enhance native iOS applications using modern development practices
• Collaborate with cross-functional teams to deliver intuitive and high-performing mobile experiences
• Write clean, maintainable, and testable Swift code
• Integrate mobile applications with RESTful APIs and Back End services
• Participate in code reviews and contribute to engineering best practices
• Support CI/CD processes and automated build pipelines
• Troubleshoot and resolve performance and production issues
• Contribute to continuous improvement initiatives across the engineering function

Required Experience

• Strong commercial experience developing native iOS applications
• Proficiency in Swift and exposure to Objective-C
• Experience with modern iOS architectural patterns such as MVVM and modular architectures
• Knowledge of unit and UI testing frameworks including XCTest/XCUITest
• Experience working with CI/CD tooling such as GitHub Actions, CircleCI, or similar
• Familiarity with REST APIs and mobile integration patterns
• Comfortable working in Agile delivery environments
• Strong communication and stakeholder collaboration skills

About Korn Ferry

Korn Ferry unleashes potential in people, teams, and organizations. We work with our clients to design optimal organization structures, roles, and responsibilities. We help them hire the right people and advise them on how to reward and motivate their workforce while developing professionals as they navigate and advance their careers. To learn more, please visit Korn Ferry at www.Kornferry.com