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Senior JavaScript/React Engineer for AI Training

Evaluate AI-generated code, build Python verification tools, and help test software across the development lifecycle. This remote US contractor role has a flexible schedule and expects 20 or more hours per week.

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OpenTrain AI

Coding & Software

Remote

Contract, part-time

Engagement

Remote

Location

Nov 6, 2026

Posted

Open to applicants in

United States

The work

You will create and review software-engineering examples used to train and assess AI models. The title highlights JavaScript and React, while the duties focus on software-engineering code evaluation; review the duties and qualifications before applying.

  • Curate code examples, write solutions, and correct implementation errors.
  • Assess AI-generated code for quality, efficiency, scalability, reliability, and performance.
  • Build Python agents and automated tools that find error patterns and test software solutions.
  • Evaluate AI capabilities across prototyping, architecture and API design, production implementation, launch, experimentation, monitoring, and ongoing operations.
  • Work mainly in Python, with JavaScript and React, C/C++, Java, Rust, and Go also involved.

Requirements and engagement

  • The expected commitment is 20 or more hours per week, with a flexible schedule.
  • Strong Python skills, including production frameworks, tools, and good development practices.
  • Experience building full-stack applications and deploying scalable software with modern languages and tools.
  • A strong grasp of software architecture, design, development, debugging, and code review, plus the ability to write clear, structured evaluation explanations.
  • Production experience at a large-scale engineering organization and formal computer science or comparable technical training are helpful; practical engineering skill is valued.

How to apply

Apply on OpenTrain with your resume, then complete the application on the hiring site. The initial engagement is one month, with possible extensions based on performance and fit.

About AI training work

AI training work is the human effort behind AI systems: people prepare examples and review model responses so systems can learn from them. Software engineers bring valuable expertise by checking whether generated code is accurate, reliable, and useful.

Requirements

  • Languages: English

How to apply

  1. Apply here on OpenTrain. You create a free account, and we send you to the hiring platform.
  2. Complete your application on the hiring platform.

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