Senior Mobile Engineer (Flutter / React Native / Kotlin / Swift) – Remote AI Training

I work with a US AI company. We’re hiring senior mobile engineers to build hard coding challenges that test AI models.

The work: design realistic mobile engineering tasks (bugs, features, refactors, performance), build a reproducible environment for each, write automated tests that verify solutions, and provide a reference solution.

Pay: per task, listed at $50–100/hr. About 15 hrs/week, flexible.

Must have:

• 5+ years in one of: Flutter/Dart, React Native/TypeScript, Kotlin (Compose), Swift (SwiftUI/UIKit)
• Strong testing habits (unit, integration or UI tests)
• Deep knowledge of state management, async code and app lifecycle

How it works: you apply, and go through an interview.

To apply, reply with: (1) your main stack and years of experience, (2) the hardest mobile bug you’ve fixed, in 2–3 sentences, (3) how you test your code.