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Yonder Media Mobile

Senior Kotlin Multiplatform Engineer - YOnC SDK

Yonder Media Mobile Poland

Telecommunications · 51-200 employees

Jul 20
Remote kotlin Senior (5-10 yrs) Full-time Poland
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About the role

Build and maintain a shared KMP core for an AI inference platform, including business logic and state machines. Design the public API and migrate existing Android and iOS native code to the shared module.

What they look for

Kotlin Multiplatform SDK Development Swift iOS Development Jetpack Compose Dependency Injection Kotlin Coroutines Kotlin/Native XCFramework API Design

Requirements

Requires production experience with Kotlin Multiplatform, SDK development, and dependency injection tools. Proficiency in Swift, iOS development, and Jetpack Compose is essential.

Full description

Yo is building an AI inference platform that runs directly on smartphones - turning the phone in your pocket into part of a global AI network. The mobile SDK that ships this to Android and iOS devices is moving to a shared core built in Kotlin Multiplatform, replacing what was previously two separate native codebases. 

 

This is a foundational hire on a KMP effort that is just getting started. You will help build the shared core from the ground up and shape its public API alongside the existing Android and iOS engineers. 

 

What you'll do: 

 

  • Design and build the shared Kotlin Multiplatform core of the SDK
  • Own the SDK's public API and how it evolves
  • Set the technical direction for the shared core and how it's adopted by the Android and iOS clients
  • Ship the SDK to production on both platforms and keep it healthy as it grows

What we're looking for:

  • Strong Kotlin fundamentals, including coroutines and structured concurrency
  • Production experience with Kotlin Multiplatform
  • Experience building and shipping an SDK or library consumed by other developers
  • Deep understanding of the Android platform
  • Working knowledge of iOS and Swift

Nice to have:

  • Compose Multiplatform 
  • Deeper Kotlin/Native experience
  • On-device AI / ML experience
  • CI/CD for mobile platforms
  • Performance profiling 

 

Location & Logistics 

 

  • Remote / flexible
  •  Reports to the CTO

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