DE-Cross-Platform Mobile Developer ...

Cross-Platform Mobile Engineer - React Native (Senior)

Kolkata, West Bengal

EY is seeking a seasoned Cross-Platform Mobile Engineer with significant hands-on experience in React Native or Flutter, complemented by essential native development expertise in either Android (Kotlin/Java) or iOS (Swift/Objective-C). This role is crucial for developing scalable, high-performance mobile applications, contributing to a library of reusable components, and ensuring the delivery of high-quality implementations that adhere to our Mobile Practice standards.

Key Responsibilities

• Develop robust, clean, and maintainable mobile applications using React Native or Flutter.
• Leverage native iOS/Android knowledge to build bridges, custom modules, implement platform-specific features, and optimize application performance.
• Integrate with REST/JSON APIs, implement analytics, secure storage solutions, push notifications, and other platform services.
• Construct modular and reusable UI components, contributing to shared code libraries.
• Focus on performance optimization, debugging, crash analysis, and ensuring responsiveness across a range of devices.
• Collaborate with design teams to achieve pixel-perfect UI implementation and ensure compliance with accessibility standards.
• Work closely with backend, architecture, QA, and DevOps teams to ensure seamless application delivery.
• Write comprehensive unit tests and adhere to secure coding practices, effective dependency management, and CI/CD best practices.

Required Skills

• Extensive experience with React Native (JavaScript/TypeScript) or Flutter (Dart).
• Mandatory hands-on native development experience in one of the following:
  • Android: Kotlin/Java, Jetpack components, Android Studio.
  • iOS: Swift/Objective-C, Xcode, UIKit/SwiftUI.
• Proven experience building native bridges, platform channels, or custom plugins.
• Strong understanding of mobile architecture patterns such as MVVM, Clean Architecture, Provider/Bloc (Flutter), or Redux/MobX (React Native).
• Expertise in REST APIs, JSON, asynchronous programming, state management, and performance tuning.
• Proficiency with Git, CI/CD pipelines, and app store/play store release processes.
• Knowledge of secure coding principles, authentication flows (OAuth2.0/JWT), and secure storage mechanisms.

Nice-to-Have Skills

• Experience with TypeScript, modular architecture, deep linking, and offline data capabilities.
• Exposure to mobile analytics platforms, feature flagging systems, A/B testing, and crash reporting tools.
• Familiarity with cloud services (Firebase, AWS, Azure) for mobile development.
• Knowledge of SonarQube or other static analysis tools.
• Experience in creating Proofs of Concept (POCs), reusable accelerators, or internal component libraries.