Freelance Software Developer (Ruby) - AI Trainer

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

Job summary

A technology platform is seeking a remote AI Tutor in Coding to collaborate on AI projects. The role requires a Bachelor's degree in Software Development or Computer Science, along with at least 3 years of experience in Ruby and associated tools. This freelance position offers flexible hours and competitive pay based on experience, providing an opportunity to shape the future of AI while contributing your expertise remotely.

Benefits

Flexible working hours

Competitive pay up to $20/hour

Work on advanced AI projects

Enhance professional portfolio

Qualifications

• 3+ years of professional experience with excellent command of Ruby and tools.
• Advanced level of English (C1) or above.
• Experience with containerization and CI/CD pipelines.
• Understanding of testing principles and TDD.

Responsibilities

• Generate prompts for AI.
• Define criteria to evaluate AI responses.
• Correct the model’s responses based on your knowledge.
• Contribute to AI projects on a freelance basis.

Skills

Ruby

Git

Docker

TDD

Analytical mindset

Communication skills

Education

Bachelor's or Master’s Degree in Software Development or Computer Science

Tools

RSpec

GitHub Actions

GitLab CI

Jenkins

Job description

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.

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

What we do

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.

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.

Although every project is unique, you might typically :

• 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. From creating training prompts to refining model responses, you’ll help shape the future of AI while ensuring technology benefits everyone.

Requirements

• You hold a Bachelor's or Master’s Degree in Software Development, Computer Science, or other related fields.
• You have at least 3 years of professional experience with excellent command of Ruby and key ecosystem tools (RSpec, Bundler).
• Your level of English is advanced (C1) or above.
• Confident use of Git and standard Linux CLI tools.
• Hands‑on experience with containerization (Docker) and CI / CD pipelines (e.g., GitHub Actions, GitLab CI, Jenkins).
• Deep understanding of testing principles and test‑driven development (TDD); strong skills in debugging, profiling, and code optimization.

Desirable

• Contributions to open‑source Ruby projects (pull requests, code reviews, issue tracking).
• Experience working with large monorepositories or major open-source projects.
• Experience with automated benchmarking, scripting, or infrastructure‑as‑code tools.
• Experience working with AI‑generated code or in code evaluation projects

Soft Skills

• Analytical and detail‑oriented mindset : proactively identifies bugs, edge cases, and test coverage gaps.
• Concise and structured communication, both in documentation and asynchronous team discussions.
• Strong ownership : able to drive tasks end‑to‑end, propose improvements, and promptly flag risks or blockers.
• Adaptability and resilience : thrives in fast‑changing requirements and ambiguous project contexts.
• Team player : open to code reviews, feedback, and knowledge sharing
• 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

Why this freelance opportunity might be a great fit for you?

• Get paid for your expertise, with rates that can goup 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.