Skip to content
OpenTrain AIFor AI Companies

JavaScript and TypeScript AI Model Evaluation Developer

Build JavaScript and TypeScript code, evaluate AI model responses, create fine-tuning datasets, and support human feedback training. This remote contractor role runs for one month with 20, 30, or 40 hours per week.

Apply now
OpenTrain AI

Coding & Software

100% Remote

Contract, part-time

Engagement

Remote

Location

Jul 17, 2026

Posted

Open worldwide

The Work

You will combine full-stack JavaScript or TypeScript development with hands-on AI model training and evaluation. The work includes building code used to improve models, checking model responses against set criteria, and helping create training data.

You will also explain evaluation decisions, refine responses for clarity and technical accuracy, and work with researchers and annotators to improve model quality.

  • Design, develop, and maintain readable, reusable, secure, and stable JavaScript or TypeScript code.
  • Evaluate models, benchmark performance, review results, and recommend improvements.
  • Rank responses to user questions across different subject areas using established criteria.
  • Write clear explanations for your evaluation decisions.
  • Create and maintain datasets for supervised fine-tuning.
  • Support reinforcement learning with human feedback and reward-model improvement.
  • Review code and documentation and provide useful feedback.
  • Produce and refine model responses for clarity, relevance, and technical accuracy.

What It Pays and Takes

This is a remote, part-time contractor assignment with a one-month contract duration. The role is open worldwide, and you must be comfortable working in English.

  • Pay: Not specified in the role details.
  • Schedule: At least four hours per day and 20 hours per week.
  • Weekly options: 20, 30, or 40 hours.
  • Availability: Four hours of overlap with Pacific Time.
  • Experience: The listing is marked entry level, while the role requires extensive JavaScript or TypeScript experience.
  • Technical skills: Strong knowledge of JavaScript ES6 and at least one of Node.js, Nest.js, React, Angular, or Vue.
  • Development skills: Experience building modular web applications with scalable architectures.
  • Code quality: Ability to write organized, maintainable, correct, and clearly annotated code.
  • Education: An engineering or computer science degree, or equivalent experience.
  • Communication: Excellent spoken and written English.
  • Valuable additional experience: Docker and software quality assurance or test planning.

How It Works

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

About AI Training Work

AI training is the human work behind systems that generate text and code. Contributors create examples, review model responses, rank outputs, and explain what makes an answer useful or accurate, while technical experience helps with specialized coding and evaluation tasks.

Requirements

  • Experience: Entry level
  • 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.

Ready to apply?

Create a free OpenTrain account and apply for this role in minutes.

Keep exploring

Similar open roles

View all AI training jobs

ML/AI Systems Engineer

Build and evaluate multi-step AI agent systems for software engineering and advanced mathematical reasoning datasets. This fully remote, one-month contractor role pays $30 per approved task and is open in nine countries.

Coding & Software
Computer Code Programming
Remote · India, Pakistan, Nigeria +6 more
English
Part-time · Flexible
Entry level
Per task · $30/label

Posted Oct 27, 2026

Computational Life Sciences AI Task Expert

Design realistic computational life sciences tasks that test AI agents on scientific data, code, tools, troubleshooting, and research outputs. This five-week remote contractor assignment pays $280 per approved task.

Coding & Software
Computer Code Programming
Remote · Worldwide
English
Part-time · Flexible
Entry level
Per task · $280/label

Posted Oct 27, 2026

Rust Architect / Backend Developer

Work on AI training projects that test Rust backend systems, APIs, concurrency, infrastructure, and reliability. This remote contractor role offers flexible work of about 15 hours per week.

Coding & Software
Computer Code Programming
Remote · United Arab Emirates, Argentina, Austria +49 more
English
Part-time · Flexible
Entry level

Posted Oct 24, 2026

Machine Learning Researcher and Task Reviewer

Review and validate machine learning engineering tasks involving Python, models, numerical computing, and system performance. This remote contractor role offers $60 to $120 per hour equivalent, paid per task that meets the project specifications, with about 15 flexible hours per week.

Coding & Software
Computer Code Programming
Remote · United Arab Emirates, Argentina, Austria +49 more
English
Part-time · Flexible
Mid-Senior level
Per task · $60–$120/hr equivalent

Posted Oct 23, 2026

Machine Learning Applied Scientist

Build and validate machine-learning models, training pipelines, inference systems, and numerical methods remotely for about 15 flexible hours per week. Compensation is $60 to $120 per hour equivalent, paid per task that meets the project specifications.

Coding & Software
Computer Code Programming
Remote · United Arab Emirates, Argentina, Austria +48 more
English
Part-time · Flexible
Entry level
Per task · $60–$120/hr equivalent

Posted Oct 23, 2026