Senior Mobile Developer
Employment Type: Contractor
Work Arrangement: Remote
Schedule: Approximately 15 hours per week

Compensation

Annualized Full-Time Equivalent: $96,000–$192,000 per year

Hourly Rate: $50–$100 per hour

The annualized figure is based on 40 hours per week and 48 working weeks per year and is provided for comparison only. Actual earnings will depend on the part-time workload, tasks completed, and project requirements.

About the Role

We are seeking experienced Senior Mobile Developers to contribute to the development and evaluation of next-generation AI systems.

You will use your mobile engineering expertise to create challenging reinforcement learning environments that evaluate an AI model's ability to solve complex mobile software engineering problems, including debugging, feature development, code refactoring, and performance optimization.

Each task will require a reproducible development environment, deterministic evaluation criteria, and a reference implementation demonstrating a correct solution.

Key Responsibilities

Create realistic and challenging mobile software engineering tasks for advanced AI models.
Design problems involving complex debugging, non-trivial feature implementation, application state and lifecycle management, and performance optimization.
Develop tasks based on your area of mobile engineering expertise.
Build reproducible environments for each coding task.
Define clear problem statements and technical requirements.
Develop deterministic verifiers that accept valid solutions across different reasonable implementations.
Ensure verifiers reject incorrect, incomplete, or hard-coded solutions.
Develop a golden reference solution for each task.
Create tasks using appropriate mobile repositories and real-world development scenarios.

Mobile Development Tracks

Candidates should have significant hands-on expertise in at least one of the following areas:

Cross-Platform Development

TypeScript or JavaScript with React Native
Dart with Flutter

iOS Development

Swift
SwiftUI
UIKit

Android Development

Kotlin
Jetpack Compose
Android View system

Required Qualifications

Significant professional experience in mobile software development.
Deep understanding of mobile application architecture.
Strong knowledge of application state management and lifecycle.
Experience with asynchronous programming in mobile applications.
Proven ability to debug complex mobile applications.
Strong experience identifying and resolving software defects.
Demonstrated ability to implement non-trivial mobile features.
Experience diagnosing and improving application performance.
Strong software engineering judgment and problem-solving ability.

Key Skills

Mobile Application Development
Kotlin
Swift
TypeScript
JavaScript
Dart
React Native
Flutter
SwiftUI
UIKit
Jetpack Compose
Android Development
iOS Development
Mobile Architecture
State Management
Application Lifecycle
Asynchronous Programming
Debugging
Feature Development
Code Refactoring
Performance Optimization
Software Testing

Compensation Structure

Compensation is output-based . Experts are paid per completed task that meets the applicable project specifications and quality requirements.

The time required to complete individual tasks may vary depending on experience, technical approach, and workflow. Minimum weekly submission requirements apply and are communicated during onboarding.

Start Timeline

Selected candidates should be prepared to begin promptly.

Candidates are generally expected to start their first tasks within 24–48 hours of completing onboarding .

Senior Mobile Developer

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