Freelance Software Developer (Kotlin) - Quality Assurance (AI Trainer)

Mindrift; Kentucky; Remote; USD 90,921 - 129,494; Part time

Benefits offered by this job

Competitive hourly rate

Experience enhancing portfolio

Flexible work schedule

Job summary

A tech company is seeking a Freelance Software Developer specializing in Kotlin for quality assurance to create automated tests and improve application performance. Candidates should have a relevant computer science degree, proficiency in Swift, and experience in mobile application development. This fully remote position pays up to $80/hour based on skills and experience, allowing for flexible work hours while contributing to advanced AI projects.

Qualifications

• Mid-level proficiency in Swift 5.9+ including SwiftUI and Combine.
• 3+ years of professional iOS/macOS development experience.
• Experience with testing frameworks (XCTest, Quick/Nimble).
• Proficiency with CI/CD tools and App Store deployment.

Responsibilities

• Design and maintain automated tests for Kotlin and Android applications.
• Collaborate with developers to resolve functional and UI issues.
• Monitor app behavior and utilize data-driven insights for improvements.

Skills

Kotlin

Automated testing

iOS development

UI automation testing

CI/CD tools

AI/ML integration

Crash analysis

Performance profiling

Education

Bachelor's or Master's Degree in Computer Science or related field

Tools

Xcode

Swift Package Manager

Fastlane

GitHub Actions

Xcode Cloud

Job description

Freelance Software Developer (Kotlin) - Quality Assurance (AI Trainer)

1 day ago Be among the first 25 applicants

This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English proficiency.

What We Do

At Mindrift, innovation meets opportunity. We believe in using the power of collective intelligence to ethically shape the future of AI.

About The Role

GenAI models are improving very quickly, and one of our goals is to make them capable of addressing specialized questions and achieving complex reasoning skills. If you join the platform as an AI Tutor in Coding, you'll have the opportunity to collaborate on these projects.

Responsibilities

• Design and maintain automated tests to ensure the quality, performance, and reliability of Kotlin and Android applications.
• Collaborate with developers to identify, reproduce, and resolve functional, performance, and UI issues across multiple environments.
• Define and improve quality standards across build pipelines, ensuring smooth CI/CD integrations and release stability.
• Monitor app behavior in production and use data‑driven insights to guide testing priorities and improvements.
• Flexibility and quick adaptation to new requirements are essential.

How To Get Started

Simply apply to this post, qualify, and get the chance to contribute to projects aligned with your skills, on your own schedule. From creating training prompts to refining model responses, you'll help shape the future of AI while ensuring technology benefits everyone.

Requirements

• Bachelor's or Master's Degree in Computer Science, Software Engineering, Software Development, Computer Engineering, Information Technology or other related fields.
• Mid-level proficiency in Swift 5.9+, including SwiftUI, Combine, async/await, and the concurrency model
• 3+ years of professional iOS/macOS development experience
• Hands‑on experience with testing frameworks (XCTest, Quick/Nimble) and UI automation testing
• Proficiency with Xcode, Swift Package Manager, and CI/CD tools (Fastlane, GitHub Actions, Xcode Cloud)
• Experience with App Store deployment and monitoring tools (Crashlytics, Firebase)
• Strong understanding of architectural patterns (MVVM, Clean Architecture) and performance optimization (ARC, Instruments)
• Experience integrating AI/ML capabilities (Core ML, Vision, Create ML)
• Practical use of AI-assisted tools for code generation, refactoring, and test automation
• Strong skills in crash analysis, memory debugging, and performance profiling
• Level of English is advanced (C1) or above
• You are ready to learn new methods, able to switch between tasks and topics quickly and sometimes work with challenging, complex guidelines.
• Our freelance role is fully remote so, you just need a laptop, internet connection, time available and enthusiasm to take on a challenge

Benefits

• Get paid for your expertise, with rates that can go up to $80/hour depending on your skills, experience, and project needs
• Take part in a part‑time, remote, freelance project that fits around your primary professional or academic commitments
• Work on advanced AI projects and gain valuable experience that enhances your portfolio
• Influence how future AI models understand and communicate in your field of expertise

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