Senior Mobile Developer

micro1; United States; On-site; USD 83,000 - 124,000; Part time

Benefits offered by this job

Remote work

Task-based pay

Job summary

micro1 seeks a Senior Mobile Software Engineer contractor to design and implement RL environments for evaluating frontier AI models. You will craft challenging mobile coding tasks aligned with real-world engineering problems and provide reproducible references.

Your work will focus on iOS/Swift, Android/Kotlin, and cross-platform stacks, shaping how models learn from high-quality mobile solutions while maintaining scalable verification processes.

Qualifications

• Extensive mobile app development experience.
• Ability to design reproducible tasks and environments.
• Proven debugging and performance optimization skills.

Responsibilities

• Create realistic, interesting, and extremely challenging mobile coding tasks for frontier AI models.
• 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 expertise: cross-platform using TypeScript/JavaScript or Dart; iOS with Swift; Android with Kotlin.
• For each task, define the problem, build a reproducible environment, and write deterministic verifiers that accept correct solutions across different valid implementations.
• Provide a reference solution showing how the task can be solved.

Skills

Kotlin

Swift

Mobile development

React Native

Flutter

Job description

pay

Required Skills

• Kotlin
• Swift
• Mobile

About micro1

micro1 is the leading AI data lab for training frontier models and evaluating AI agents. Experts contribute their diverse subject matter knowledge across domains such as finance, healthcare, STEM engineering, and more. micro1 transforms that real-world expertise into high-quality training data, evaluations, and feedback loops that improve how AI systems learn, reason, and perform.

Our platform identifies and vets top talent through an AI recruiter, enabling high-quality expert contributions at scale. We aim to enable 1 billion people to do meaningful work by applying their expertise to AI. As our global expert network grows, micro1 is building the human intelligence layer for frontier AI.

Role Title: Senior Mobile Software Engineer

Role Type: Contractor (~15 hrs a week)

Location: Remote

In this role, you’ll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform through high-quality, real-world input.

As an expert, you will create Reinforcement Learning Environments that test an AI model’s ability to solve complex mobile software engineering problems related to fixing code, creating features, refactoring code, and optimizing performance. You will be tasked with creating a reproducible environment and a golden reference solution for each problem.

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.

Start Timeline & Availability

We typically fill roles within 48 hours and are looking for experts ready to jump in right away. If selected, we expect you to start your first tasks within 24–48 hours of completing onboarding.

Email

Refer and Earn
$1000