Senior Mobile Developer

Great Value Hiring; United States; Remote; USD 69,000 - 138,000; Full time

Job summary

Great Value Hiring is seeking a Senior Mobile Developer for contract work in the United States. You will create challenging mobile coding tasks for frontier AI models, emphasizing cross-platform approaches with React Native, Flutter, iOS, and Android expertise.

The role requires designing problems, building reproducible environments, and writing deterministic verifiers, plus delivering a reference solution for each task.

Qualifications

• Experience building cross-platform mobile apps.
• Ability to design complex tasks and reproducible environments.
• Strong debugging and performance optimization skills.
• Experience with React Native, Flutter, iOS or Android is a plus.

Skills

React Native

TypeScript

Dart/Flutter

Swift

Kotlin

Debugging

Performance

State lifecycle

Job description

Senior Mobile Developer [$50 - $100/hour]

Scope of Work

• Create realistic, interesting, and extremely challenging mobile coding tasks for frontier AI models using your preferred repositories
• Design problems that require strong mobile engineering skills, such as tracking down subtle bugs, building non-trivial features, handling application state and lifecycle, or improving performance
• Develop tasks relevant to your expertise: cross-platform applications using TypeScript, JavaScript, or Dart; iOS applications using Swift; or Android applications using Kotlin
• For each task, define the problem, build a reproducible environment, and write deterministic verifiers that accept correct solutions across different valid implementations while rejecting incorrect, incomplete, or hard-coded approaches
• Provide a reference solution showing how the task can be solved

Preferred Qualifications

• Significant hands-on expertise in at least one of the following mobile development tracks:
• Cross-platform: TypeScript or JavaScript with React Native, or Dart with Flutter
• iOS: Swift with SwiftUI or UIKit
• Android: Kotlin with Jetpack Compose or the Android View system
• Deep understanding of mobile application architecture, state management, asynchronous programming, and application lifecycle
• Proven ability to debug complex mobile applications, resolve bugs, and deliver effective performance improvements

Compensation Structure

Compensation is output-based; experts are paid per task that meets the project specifications. The time required to complete work may vary depending on the expert s experience and workflow. Minimum weekly submission requirements apply and will be communicated during onboarding.