TypeScript Code Review Engineer

About OpenTrain

OpenTrain is the #1 platform for finding and building careers in AI training and data labeling. We help freelancers manage proof of work, discover projects that match their skills, and build a durable AI-training portfolio that grows with every project.

OpenTrain AI is the hiring and contracting organization for this role. Working with OpenTrain means contributing to the human side of AI — real, impactful tasks that help models learn from expert human judgment.

About AI training and why it matters

AI training (data labeling / annotation) is the human work that teaches machine learning systems how to write, reason, and code. Reviewers provide structured feedback, rate outputs, and explain judgments so models improve in accuracy, safety, and usefulness.

These roles are typically remote, flexible, and accessible: they let skilled contributors shape cutting-edge AI behavior while working part time or freelancing.

The role

You will review AI-generated TypeScript code snippets and technical explanations, apply project rubrics, and produce clear, evidence-based feedback that guides model improvements. This is contractor work through OpenTrain AI, focused on consistent, high-quality code review and evaluation.

• Role type: Remote contractor, part-time.
• Time commitment: 20+ hours per week.
• Labeling work: RLHF and evaluation/rating of code and explanations.

What you'll do day-to-day

Perform structured code review and evaluation tasks using project guidelines and rubrics. Document decisions clearly so reviewers, trainers, and models can learn from your work.

• Evaluate model outputs against source materials, correctness, readability, and type safety.
• Apply rubrics consistently and document evidence-based judgments.
• Write concise explanations that explain why a rating or correction was made.
• Maintain consistency across repeated review tasks to preserve dataset quality.

Requirements

• Advanced TypeScript expertise: type manipulation, generics, interfaces, and utility types.
• Experience reviewing TypeScript for correctness, readability, and type safety.
• Familiarity with React, Angular, Vue.js, or Node.js application structure.
• Comfort with Git workflows: branching, merging, pull requests, and modern build tooling.
• Fluency in English and strong written communication skills.
• Attention to detail and ability to follow detailed project instructions and rubrics.
• Able to work independently on remote contractor tasks.

Nice-to-have

• Prior AI data training or annotation experience is a plus but not required.
• Experience writing clear technical explanations that others can follow.
• Background in code review processes or formal QA practices.

Schedule, pay, and logistics

This is hourly contractor work through OpenTrain AI. The listing shows an hourly rate of $60/hour. Projects vary in length; estimated project earnings are shown on OpenTrain.

You can work remotely from the countries listed on the project: Bangladesh (BD), Bhutan (BT), Brazil (BR), Cambodia (KH), Germany (DE), India (IN), Indonesia (ID), Malaysia (MY), Nepal (NP), Pakistan (PK), Singapore (SG), Sri Lanka (LK), Thailand (TH), Philippines (PH), United States (US), Timor-Leste (TL), and Vietnam (VN). This role is not worldwide—please confirm eligibility on your OpenTrain profile.

• Employment types: Contractor, Part-time.
• Minimum weekly commitment: 20+ hours.

How to apply and next steps

If you meet the requirements, apply on OpenTrain and complete any skills checks or onboarding tasks required by the project. Successful applicants will receive task instructions, rubrics, and examples before starting paid work.

OpenTrain helps you build a portfolio of completed AI-training tasks that makes it easier to find future projects and grow a long-term freelance career in this fast-growing field.