Remote Senior Mobile Developer (Kotlin) | Distributed Engineering & Research

JB USA Recruiting is actively placing a remote Remote Senior Mobile Developer (Kotlin) | Distributed Engineering & Research ($50 - $100/hour) to support high-priority AI reasoning and domain benchmark initiatives. Strong practical fluency in Kotlin, Swift, Mobile is central to succeeding in this remote specialist engagement.

Scope of Work

• Self-motivated and reliable within an asynchronous remote work environment.
• 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.
• Create realistic, interesting, and extremely challenging mobile coding tasks for frontier frontier AI reasoning systems 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.

Ideal Candidate Profile

• Work Location: Remote (100% Remote / Asynchronous Flexibility)
• Available Openings: 100 open positions
• Core Competencies: Kotlin, Swift, Mobile
• iOS: Swift with SwiftUI or UIKit.
• Android: Kotlin with Jetpack Compose or the Android View system.
• Comprehensive command 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.

Pay & Remote Engagement Terms

• Compensation Rate: $50 - $100/hour (contract specialist remuneration)
• Work Arrangement: 100% Remote / Work From Home
• Eligible Remote Countries: United States, United Kingdom, Canada, Australia, New Zealand, Ireland, and South Africa
• Core Competencies: Kotlin, Swift, Mobile
• Hiring Agency: JB USA Recruiting

Direct Application Process: Click the Apply button on this page to proceed directly to our partner application portal and submit your profile for immediate consideration.