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Senior Mobile Developer

micro1

LocationRemote
SenioritySenior
Companymicro1
Verified recentlyChecked today
Compensation

$104k-$208k

Salary details are shown when available from the source listing. Sign in before applying so the role can be reviewed against your resume, salary goals, seniority, timezone, and location eligibility.

Requirements and working style

Decision details from the source listing

Schedule

flexible

These fields are normalized from the employer's text. Confirm details on the employer site before applying.

WFH.team analysis

What this posting tells you

Remote senior mobile software engineering contractor role, approximately 15 hours per week. Work involves creating challenging mobile coding tasks for AI systems, reproducible environments, deterministic verifiers, and reference solutions. Compensation is output-based and paid per accepted task, but no pay amount or range is stated. Minimum weekly submission requirements apply; start is expected within 24–48 hours after onboarding.

Role lane

Customer success, Design and creative, Frontend, Medical billing, Mobile engineering, Product, Software, Writing and content

Where you can work

Eligible countries are not stated.

Working hours

Timezone overlap is not stated.

Arrangement

Senior · Contractor

Required signals
Mobile software engineeringExpertise in at least one of: React Native with TypeScript or JavaScript, Flutter with Dart, iOS with Swift, or Android with KotlinMobile application architectureState managementAsynchronous programmingApplication lifecycleDebugging complex mobile applicationsCreating reproducible development environmentsWriting deterministic verifiers and reference solutions
Confirm before applying
  • Eligible hiring countries are not stated
  • Required timezone overlap is not stated
Market context

Customer success hiring on WFH.team

9,671active related roles
3,833new in the latest period
2844.4jobs per 100 candidates
$182kmedian of comparable listed ranges

This role's listed pay is below the median among 200 comparable roles shown here. Category counts come from WFH.team's latest published remote job market snapshot.

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Skills and signals
Mobile software engineeringExpertise in at least one of: React Native with TypeScript or JavaScript, Flutter with Dart, iOS with Swift, or Android with KotlinMobile application architectureState managementAsynchronous programmingApplication lifecycleDebugging complex mobile applicationsCreating reproducible development environmentsWriting deterministic verifiers and reference solutionsRemote
Job description

Senior Mobile Developer at micro1

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.

Company context

Working remotely at micro1

micro1 builds human-expertise data and evaluation infrastructure for AI models and agents. It recruits core-team employees and domain experts for AI training projects.

Headquarters
San Francisco Bay Area, California, United States
Founded
2022
Remote policy

Expert opportunities are remote and can be flexible. International applicants are considered, subject to country exclusions and each project's requirements. Core-team work arrangements vary by opening; check the individual posting.

Application process

Apply through the official posting. Expert applicants complete an AI interview and skills certification, followed by project selection and onboarding. Certification does not guarantee a project or immediate work.

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