Senior iOS Developer

At EY, you’ll have the chance to build a career as unique as you are, with the global scale, support, inclusive culture and technology to become the best version of you. And we’re counting on your unique voice and perspective to help EY become even better, too. Join us and build an exceptional experience for yourself, and a better working world for all.

Senior iOS Engineer

Experience: 4 - 8 Years

Role Summary

We are seeking a hands-on Senior iOS Engineer with strong expertise in Swift and SwiftUI to build secure, scalable, high-performance enterprise mobile applications. The ideal candidate will write clean code, build reusable components, follow strong engineering practices, and support architecture implementation within the Mobile Practice.

Key Responsibilities

• Develop features using Swift, SwiftUI, UIKit, and programmatic layouts.
• Build modular and reusable components aligned with Mobile Practice accelerators.
• Integrate REST/JSON APIs, SDKs, secure storage, analytics, and platform services.
• Ensure performance optimization, crash analysis, memory profiling, and refactoring.
• Implement pixel-perfect UI aligned with design and accessibility guidelines.
• Strong hands-on experience with Swift Concurrency (async/await, actors, structured concurrency).
• Write Unit Tests (XCTest) and maintain high test coverage.
• Ensure code quality through SonarQube (fixing code smells, vulnerabilities, duplications).
• Apply architectural patterns: MVVM, Clean Architecture, VIPER, SOLID.
• Participate in code reviews, enforce coding standards, and support CI/CD workflows.
• Collaborate with architects, backend, QA, and UI/UX teams for seamless delivery.
• Follow mobile governance: secure coding, documentation, dependency management, and performance benchmarks.

Required Skills

• Strong hands-on experience in Swift (5+), SwiftUI, UIKit, Foundation.
• Experience with XCTest, mocking frameworks, and automated testing practices.
• Working knowledge of SonarQube and static code analysis.
• Strong understanding of REST APIs, JSON, async/await, Combine, concurrency.
• Ability to debug crashes, analyze logs, and optimize performance.
• Experience with Git, branching strategies, and CI/CD pipelines.
• Knowledge of OAuth2.0, JWT, SSL pinning basics, and secure storage.
• Good understanding of accessibility, autolayout, adaptive UI, and responsive design.

Nice-to-Have

• Exposure to React Native or Flutter.
• Familiarity with Firebase/AWS/Azure SDKs.
• Experience with MDM/MAM for enterprise apps.
• Knowledge of UI testing, snapshot testing, and App Center/TestFlight workflows.
• Exposure to IoT or AI/ML features.

EY | Building a better working world

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