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.
Key Responsibilities
Build and maintain the KMP shared core: business logic, state machines, and data models used by both the Android and iOS clients
Design the shared module's public API - decide what it exposes to platform-specific code and what stays internal
Keep the shared module platform-clean: no Android-only imports, plain data classes and suspend functions at the platform boundary
Wire up dependency injection using Metro (a newer DI tool similar to Dagger/Anvil)
Package the iOS side as an XCFramework and handle Kotlin/Native interop correctly for Swift consumers
Build and maintain a Jetpack Compose benchmark app on Android used to validate the shared core
Work with the Android and iOS engineers to migrate their existing native code onto the shared core
Required Qualifications
Production experience with Kotlin Multiplatform: shared module design, expect/actual, judgment on where platform boundaries belong
Experience building and shipping an SDK or library consumed by other developers - deciding what belongs in a public API and what stays closed
Dependency injection experience (Dagger, Anvil, Hilt, Koin, or similar); able to pick up Metro quickly
Working knowledge of Swift and iOS development, including how Kotlin/Native interop and Objective-C/Swift bridging work
Jetpack Compose experience
Strong Kotlin fundamentals: coroutines, suspend functions, structured concurrency
Nice to Have
Compose Multiplatform experience - not needed now, but a likely future direction
Familiarity with Kotlin/Native specifics: memory model, concurrency constraints, interop edge cases
Android or iOS production experience beyond KMP itself
On-device AI / ML experience
What Success Looks Like (First 6 Months)
Shared KMP core in production use by both the Android and iOS clients
Clean, reviewed public API for the shared module
Android and iOS native code migrated onto the shared core
Working Compose benchmark app used to validate changes to the core
Location & Logistics
Remote / flexible
Reports to the CTO
Published on: 7/20/2026
Yonder Media Mobile
YMM Inc. is a US-based technology company founded in July 2018, focused on connecting communities across borders, particularly between the US and Mexico.
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