We are onboarding 100 Senior Mobile Software Engineers globally across Native iOS (Swift), Native Android (Kotlin), and Cross-Platform (React Native / Flutter) to create reinforcement learning (RL) benchmark environments for frontier AI coding models. In this role, you will design complex, real-world mobile coding challenges—spanning multi-file architectural refactors, tricky lifecycle bugs, asynchronous state race conditions, and performance profiling—and write automated deterministic verifiers that validate model code execution. Key Highlights
- Compensation: $50 – $100 / hour (Output-based per approved task)
- Commitment: ~15 hours/week (Completely flexible hours; pick your own days/weekends)
-

Location:
100% Remote (General)
- Tracks Available:
- iOS: Swift, SwiftUI, UIKit
- Android: Kotlin, Jetpack Compose, Android Views
- Cross-Platform: React Native (TypeScript/JS) or Flutter (Dart)
- Fast Turnaround: Onboarding completes quickly; start tasks within 24–48 hours What You’ll Do
- Design challenging, production-grade mobile problems based on realistic repositories and architectures.
- Build reproducible local/containerized environments and write deterministic verifiers that programmatically test and grade model-submitted code.




- Expose common LLM mobile failure modes: state retention bugs, lifecycle mismanagement, thread-blocking calls, and UI jank.
- Author canonical golden reference solutions for every created challenge. What You Need
- Deep, senior-level production experience in iOS (Swift), Android (Kotlin), or Cross-Platform (React Native/Flutter) .
- Mastery of mobile app architecture (MVVM, MVI, Clean Architecture), state machines, concurrency, and native lifecycles.
- Strong debugging instincts and automated testing experience (unit testing, mocking, deterministic assertion design).
- Ability to work autonomously in a flexible, output-driven environment. Apply and start the evaluation directly here: ? https://jobs.micro1.ai/post/31dc936e-0f29-441f-baf9-91c2ff9cc7d4?referralCode=9362cde6-789d-498c-8990-d3999fe84965&utm;_source=referral&utm;_medium=share&utm;_campaign=job_referral *(Fast-track notes: Please apply using a
* *new or secondary email address* *so the referral registers properly, select availability within 24 hours, finish the screening assessment ASAP, and DM with your name and stack so I can expedite your review)*

📌 100 Senior Mobile Software Engineers (España)
🏢 SwiftAI Recruit
📍 España