Freelance Software Developer (Kotlin) - Ai Trainer

Mindrift; Johannesburg; Remote; ZAR 300 000 - 400 000; Part time

Job summary

A leading AI platform provider is seeking a Freelance Software Developer proficient in Kotlin to work on innovative AI projects. The role is fully remote, allowing flexible scheduling, and candidates should have at least 3 years of experience and a relevant degree. Responsibilities include generating prompts for AI and evaluating model responses. This position offers competitive rates up to $20 per hour based on expertise.

Benefits

Competitive pay up to $20/hour

Flexible freelance hours

Experience with advanced AI projects

Qualifications

• 3+ years of Kotlin development experience (Android or server-side).
• Strong knowledge of JVM ecosystem and Java interoperability.
• Advanced English proficiency (C1) or above.

Responsibilities

• Generate prompts that challenge AI.
• Define comprehensive scoring criteria for AI's answers.
• Correct the model's responses based on domain-specific knowledge.

Skills

Kotlin development

JVM ecosystem

Android SDK

Async programming

Debugging skills

CI/CD pipelines

Secure coding practices

Agile/Scrum

Git workflows

Cloud platforms

Education

Bachelor's or Master's Degree in relevant field

Tools

Docker

Job description

Freelance Software Developer (Kotlin) - AI Trainer 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.

About Mindrift

At Mindrift, innovation meets opportunity. We believe in using the power of collective intelligence to ethically shape the future of AI. The Mindrift platform connects specialists with AI projects from major tech innovators. Our mission is to unlock the potential of Generative AI by tapping into real-world expertise from across the globe.

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.

Typical Responsibilities

• Generate prompts that challenge AI.
• Define comprehensive scoring criteria to evaluate the accuracy of the AI's answers.
• Correct the model's responses based on your domain‑specific knowledge.

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.

Requirements

• You hold a Bachelor's or Master's Degree in Computer Science, Software Engineering, Software Development, Computer Engineering, Information Technology or other related fields.
• You have at least 3 years of Kotlin development experience (Android or server‑side).
• Your level of English is advanced (C1) or above.
• Strong knowledge of JVM ecosystem and Java interoperability.
• Experience with Android SDK, Jetpack Compose, modern architecture (MVVM, Clean Architecture).
• Proficiency with coroutines, flows, async programming.
• Familiarity with DI frameworks (Dagger / Hilt / Koin).
• Git workflows, code reviews, Agile / Scrum.
• CI / CD pipelines, Docker, cloud platforms (AWS / Azure / GCP).
• Secure coding practices (OWASP).
• Debugging and optimization skills.
• Ability to leverage AI‑assisted development tools.

Other Qualifications

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 $20 / 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.