Senior Kotlin Multiplatform Engineer (#4163)

Work type : Office / Remote Technical Level : Senior Job Category : Software Development

About the Client :

Our customer is a leading provider of onboard retail technology and mobile solutions for the travel and retail industries. The company designs and builds digital products that transform how airlines, trains, and retailers manage in-motion sales, inventory, and customer experiences.

We are forming a dedicated Kotlin Multiplatform (KMP) team to build a new cross-platform mobile application from the ground up — one codebase, two native experiences : iOS and Android. You’ll join a small, highly skilled Scrum team that owns the full delivery pipeline — from architecture and development to testing, optimization, and release.

Responsibilities :

• End-to-end development of high-performance mobile applications for both iOS and Android using Kotlin Multiplatform (KMP).
• Design and implement shared business logic and platform-specific layers to ensure native user experience and optimal performance on each platform.
• Architect the application using Clean Architecture / MVVM / MVI, ensuring modularity, scalability, and maintainability.
• Experience with device-to-device communication protocols, especially Bluetooth / BLE.
• Develop rich, responsive UI layers using Jetpack Compose (Android) and SwiftUI (iOS) where necessary, leveraging Compose Multiplatform when appropriate.
• Integrate with backend APIs (REST / GraphQL), manage data synchronization, caching, and offline capabilities.
• Optimize app performance, memory usage, and responsiveness for both platforms.
• Implement comprehensive testing : unit, integration, and UI tests across platforms.
• Configure and maintain automated build, test, and release pipelines (CI / CD) for Android and iOS using tools like GitHub Actions, Bitrise, or Fastlane.
• Participate in code reviews, technical discussions, and agile ceremonies, ensuring continuous improvement and delivery excellence.
• Collaborate closely with backend engineers, designers, and QA to deliver polished, high-quality user experiences.

Must-Have Skills :

Would be a plus :

We offer