Senior Kotlin Multiplatform Mobile Developer

DE - KMM - Senior - Developer - GDNF02

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. 

 

 

 

 

We are looking for a Kotlin Multiplatform Mobile (KMM) Developer to design, build, and maintain a shared mobile codebase that powers both Android and iOS applications.  You’ll work closely with Android, iOS, backend, QA, and product teams to deliver high-quality features with an emphasis on clean architecture, testability, performance, and developer experience.

 

 

Key Responsibilities

 

• Develop and maintain cross-platform  modules using Kotlin Multiplatform Mobile (KMM).
• Implement secure authentication and authorization flows (e.g., OAuth 2.0, OpenID Connect, MFA, SSO).
• Integrate with identity providers and enforce least privilege access and continuous verification.
• Collaborate with security architects to embed Zero Trust principles into mobile client design.
• Ensure secure storage of credentials and tokens using platform-specific secure storage (e.g., Android Keystore, iOS Keychain).
• Monitor and respond to runtime security signals (e.g., device integrity, jailbreak/root detection).
• Write clean, testable, and efficient Kotlin code for shared and platform-specific modules

 

 

Experience

 

• 4+ years of experience in mobile application development (iOS/Android).
• 2+ years of experience in Kotlin Multiplatform development.
• Strong understanding of Kotlin language features and best practices.
• Experience in compose multiplatform.
• Experience integrating shared code with platform-specific features (Swift/Objective-C for iOS, Kotlin/Java for Android).
• Hands on experience with Jetpack compose
• Experience in unit testing and ensuring code quality using tools like SonarQube.
• Knowledge of JSON, REST APIs, and Web Services.
• Experience in setting up CI/CD pipelines for cross-platform projects.

 

EY | Building a better working world 

 
EY exists to build a better working world, helping to create long-term value for clients, people and society and build trust in the capital markets.  

 
Enabled by data and technology, diverse EY teams in over 150 countries provide trust through assurance and help clients grow, transform and operate.  

 
Working across assurance, consulting, law, strategy, tax and transactions, EY teams ask better questions to find new answers for the complex issues facing our world today.  

Experience Level

Senior Level