Software Engineer, Part-Time Open Source Coding - Remote (Worldwide)

• $50–$100 per hour equivalent, paid per accepted task

• 100% remote

• Part-time

• Under 20 hours a week, you choose when

Build and improve open source software that supports careful AI training work. You will solve real engineering problems, explain your decisions, and help make code reliable for the people who use it.

AI training depends on dependable software and clear technical judgment. Open source engineers bring experience with real codebases, reviews, maintenance, and the tradeoffs behind a good implementation. OpenTrain AI is hiring for this role.

What you'll do

• Add capabilities to mature open source repositories while respecting their existing design.

• Investigate hard-to-reproduce failures and produce durable fixes aligned with each project's conventions.

• Solve challenging defects and ship durable fixes that fit each project's conventions.

• Review changes, validate results, and document implementation decisions.

Why this is worth your time

• Earn $50–$100 per hour equivalent, paid per accepted task.

• Apply your engineering judgment to feature work, debugging, refactoring, and review.

• Work independently on a part-time schedule under 20 hours per week.

• Fully remote and flexible, no fixed shifts, no commute

Who this is for

• Expert-level proficiency in at least two of Python, C++, Java, Rust, TypeScript, Go, or C#.

• Extensive experience contributing to open source projects through codebase refactoring, feature development, or bug fixing.

• Ability to analyze complex coding problems and use competitive programming techniques.

• Careful, detail-focused work across code review, validation, maintenance, and documentation.

• Fluent in English for code review, documentation, and technical communication.

• Clear written and verbal communication, independent work habits, and reliable delivery under project deadlines.

• Open to candidates in: United Arab Emirates, Argentina, Austria, Bangladesh, Belgium, Bahrain, Brazil, Canada, Switzerland, Chile, Colombia, Germany, Denmark, Algeria, Egypt, Spain, France, United Kingdom, Ghana, Greece, Indonesia, India, Italy, Jordan, Japan, Kenya, Kyrgyzstan, Kuwait, Kazakhstan, Lebanon, Sri Lanka, Morocco, Mexico, Malaysia, Nigeria, Netherlands, Oman, Peru, Philippines, Pakistan, Palestine, Portugal, Qatar, Saudi Arabia, Singapore, Thailand, Tunisia, Taiwan, United States, Uzbekistan, Vietnam, and South Africa.

• No AI experience needed.

Pay and details

• $50–$100 per hour equivalent; pay is per accepted task, as an independent contractor.

• Part-time, flexible schedule; fully remote, worldwide.

• Fluent English is required for code review, documentation, and technical communication.

How to apply

1. Apply on OpenTrain (about two minutes): https://www.opentrain.ai/jobs/software-engineer-open-source-contributions--cmwbbbmcg002k08laiwafeojl/?ch=qajobsboard.com&sub=p_qajobsboard-cmwbbbmcg-20261116

2. Complete the application on the hiring platform.

3. If shortlisted, take a conversational AI interview with technical questions and a coding challenge soon after you are invited.

Apply to contribute to open source code and help validate dependable AI training systems.

About OpenTrain AI

OpenTrain AI hires professionals for paid, part-time software work supporting AI training.