Mobile Engineer, Part-Time AI Coding Task Authoring - Remote (United States)

• $50–$100 per hour equivalent, paid per task• 100% remote• Part-time• About 15 hours a week, you choose when Work on the cutting edge of AI coding tools, on your own schedule, and get paid for the mobile engineering skills you already have. The AI coding tools changing how software gets built are trained and tested by real mobile engineers. The teams building them need people who can turn real mobile engineering problems into demanding coding tasks, judge whether an AI solution works correctly, write the implementation a professional would deliver, and explain exactly where the solution falls short. Your judgment becomes part of how the next generation of coding models works. This is that work, done remotely around your current job. What you'll do• Create technically demanding mobile coding tasks covering bug fixes and feature development• Build reproducible environments and deterministic checks for each task• Write reference implementations that demonstrate correct solutions across valid approaches• Design tasks involving state management, application lifecycle behavior, debugging and performance Why this is worth your time• Get paid the equivalent of $50–$100 an hour to build real AI skills, on top of your current job• Contribute realistic mobile problems and reliable checks to the work of training and testing AI coding models• Apply your engineering judgment to AI development through the mobile architecture, debugging and validation work you already know• Fully remote and flexible, no fixed shifts, no commute Who this is for• Significant hands-on mobile development expertise in at least one relevant track, with fluency in English• Hands-on experience with React’s mobile framework using JavaScript or TypeScript; Flutter with Dart; SwiftUI or UIKit with Swift; or Android View or Jetpack Compose with Kotlin• Strong knowledge of mobile architecture, state management, asynchronous programming and application lifecycle, with the ability to debug complex applications and build reliable deterministic validation• No prior AI training work is listed as a requirement; this role calls for substantial mobile development expertise. Pay and details• $50–$100 per hour equivalent; pay is per task, as an independent contractor• About 15 hours a week, you choose when; fully remote, United States• Weekly task submissions must meet the project’s minimum requirements. How to apply1. Apply on OpenTrain (about two minutes; upload your resume).2. Complete a short application on the hiring platform.3. If shortlisted, take a conversational AI interview with technical questions and a coding challenge, whenever it suits you. Most people hear back within days. Ready to put your mobile engineering skills to work at the frontier of AI? Apply today. About OpenTrain AIOpenTrain AI connects experienced professionals with paid, part-time AI training work: shaping and improving the AI systems that companies are building right now.