Mobile App Developer

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Mobile App Developer based in Brazil.

Join an innovative AI-focused project where your mobile software engineering expertise will help train and evaluate next-generation AI systems. In this remote contractor role, you will design challenging, realistic coding tasks that test AI models on complex mobile development problems. Your work will cover debugging, feature development, code refactoring, application architecture, and performance optimization. You will build reproducible development environments, create reliable automated verification systems, and provide reference solutions for each task. Depending on your specialization, you can contribute to cross-platform, iOS, or Android development. This opportunity is ideal for an experienced mobile engineer who enjoys solving complex technical challenges and helping advance AI capabilities through practical, high-quality engineering work.

As a Senior Mobile Software Engineer contributing to AI training, you will develop rigorous coding challenges and evaluation environments that assess how effectively AI models solve real-world mobile engineering problems. Your main responsibilities will include:

• Create realistic, engaging, and technically challenging mobile coding tasks using repositories of your choice.

• Design problems that assess advanced engineering skills, including identifying subtle bugs, implementing complex features, managing application state and lifecycle, refactoring code, and improving performance.

• Develop tasks within your area of expertise, including cross-platform applications built with TypeScript, JavaScript, or Dart; iOS applications using Swift; or Android applications using Kotlin.

• Define clear problem statements and establish reproducible development environments for each coding challenge.

• Build deterministic automated verifiers that accept correct solutions across different valid implementations while rejecting incorrect, incomplete, or hard-coded approaches.

• Develop high-quality reference solutions demonstrating effective ways to solve each task.

• Ensure that challenges accurately reflect real-world mobile software engineering requirements and test meaningful technical problem-solving abilities.

• Meet the project's minimum weekly submission requirements, which will be communicated during onboarding.

Requirements:

The ideal candidate will have strong hands-on mobile engineering experience, excellent debugging skills, and a solid understanding of modern application development principles. Relevant qualifications include:

• Significant practical experience in at least one of the following mobile development tracks:

  • Cross-platform development: TypeScript or JavaScript with React Native, or Dart with Flutter.

  • iOS development: Swift with SwiftUI or UIKit.

  • Android development: Kotlin with Jetpack Compose or the Android View system.

  • Deep understanding of mobile application architecture, state management, asynchronous programming, and application lifecycle management.

  • Proven ability to debug complex mobile applications, identify root causes, resolve challenging defects, and deliver effective performance improvements.

  • Strong problem-solving skills and the ability to design sophisticated coding challenges that reflect realistic engineering scenarios.

  • Ability to create reproducible environments, develop reliable automated tests or verifiers, and distinguish robust solutions from incomplete or hard-coded implementations.

  • Capacity to produce clear, technically sound reference solutions and work independently in a remote environment.

  • Availability to meet minimum weekly task submission requirements.

  Benefits:

  • Compensation: USD 50–100 per hour as indicated in the listing; actual compensation is output-based, with payment per task that meets project specifications.

  • Remote work: Work remotely, with flexibility to organize your workflow.

  • Part-time commitment: Approximately 15 hours per week.

  • Flexible work approach: Complete tasks using your preferred repositories and established engineering workflow, subject to project requirements.

  • Technical impact: Apply your expertise to the development and evaluation of advanced AI systems.

  • Specialized engineering work: Focus on challenging mobile development problems across cross-platform, iOS, or Android technologies.

  • Clear onboarding expectations: Minimum weekly submission requirements will be communicated during onboarding.

We use an AI-powered matching process to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements. Our system identifies the top-fitting candidates, and this shortlist is then shared directly with the hiring company. The final decision and next steps (interviews, assessments) are managed by their internal team.

We appreciate your interest and wish you the best!

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