JavaScript Engineer (English)

You will help evaluate and improve AI-generated JavaScript code and technical explanations. The work focuses on correctness, clear reasoning, prompt adherence, fact-checking, and useful explanations for learners and developers.

• Review JavaScript code and explanations for correctness, readability, and performance.
• Write improved solutions and educational explanations that show correct methods.
• Compare model responses and rate their reasoning quality and accuracy.
• Find logic errors, conceptual mistakes, and edge-case problems.
• Check frontend and backend JavaScript behavior, including async patterns and state management.

This is fully remote, part-time contract work for an intermediate-level JavaScript professional. Scheduling is flexible, and the project is expected to run for 1 to 3 months.

• $60 per hour.
• About 20 hours per week.
• Open to candidates in Bangladesh, Bhutan, Brazil, Cambodia, Germany, India, Indonesia, Malaysia, Nepal, Pakistan, Singapore, Sri Lanka, Thailand, the Philippines, the United States, Timor-Leste, and Vietnam.
• Professional fluency in English with strong written communication.
• At least 2 years of professional JavaScript experience in production environments.
• Deep knowledge of closures, async and await, prototype-based inheritance, and the JavaScript event loop.
• Strong code review skills and experience assessing technical correctness.
• Hands-on experience with React, Node.js, or another major JavaScript framework or runtime.
• A bachelor's degree in Computer Science or a closely related technical field.
• Experience with AI data training, annotation, or evaluation of AI-generated technical content is helpful.
• Open-source JavaScript or TypeScript contributions, bundler and tooling experience, typed API or schema-driven design experience, and frontend-backend debugging experience are helpful.

Apply on OpenTrain with your resume, then complete the application on the hiring site.

AI training is the human work behind systems that generate code and text, including reviewing model responses, correcting errors, and rating quality. OpenTrain helps people find these projects, build a profile, and apply in minutes.