Software Developer

You will review backend coding tasks, bug fixes, source materials, and model outputs against project rubrics and guidelines. You will explain your decisions clearly so the feedback can help improve AI system behavior.

The work also involves designing and reviewing deterministic verifiers, maintaining consistency across repeated reviews, and applying strong software engineering judgment to coding evaluations.

• Review project materials, source code, and model outputs against project guidelines.
• Apply rubrics and provide clear written feedback on coding work.
• Design and review backend coding tasks, bug fixes, and deterministic verifiers.
• Maintain consistent quality across repeated review tasks.
• Use debugging, performance analysis, automated testing, and code review skills.

What it pays and takes

This is part-time contractor work with flexible hours and days. It is open to candidates in the countries listed for this role, and the work requires professional fluency in English.

• Pay: $30 to $100 per hour equivalent, paid per task that meets the project specifications.
• Estimated project earnings: $3,600 to $12,000 based on the hourly-equivalent rate, schedule, and duration shown on OpenTrain.
• Schedule: Approximately 15 hours per week, with flexible hours and days.
• Location: remote, open to applicants in Brazil and India.
• Language: Professional fluency in English.
• Backend experience with Java, Node.js, Go, Rust, TypeScript, Python, C++, or a similar language.
• Experience building scalable services and APIs.
• Experience designing test strategies, maintaining large test suites, diagnosing flaky tests, or raising testing standards on a team.
• A record of delivering high-quality, performant backend projects.
• Knowledge of debugging, system bottlenecks, codebase refactoring, complex features, algorithms, data structures, and foundational computer science.
• Strong code review judgment, analytical thinking, problem-solving, and technical communication skills.
• Prior AI training experience is not required.

How it works

You apply here in about two minutes and finish on the hiring platform. The next step is a short AI interview (technical roles include a coding challenge). Passing it is how you qualify for paid tasks, so take it soon after you are invited.

The hiring platform's application for this job asks for your resume, your LinkedIn profile, your phone number and answers to 7 screening questions.

About AI training work

AI training is the human work behind many AI systems. Contributors review examples, write feedback, and evaluate model outputs so these systems can learn from accurate, consistent judgments; software engineering experience is useful when the project involves code and technical verification.