Senior JavaScript Engineer for AI Model Training (Remote)

Prolific; United States; Remote; USD 41,000 - 69,000; Full time

Job summary

Prolific is seeking JavaScript Specialists to join our Expert Network to train and evaluate AI models using real engineering expertise. If you have the necessary experience, we’ll send you a quick 10- to 15-minute test to assess your skills, and if successful, you’ll be invited to join Prolific as a paid participant.

Researchers looking for your skills tend to pay up to $50 per hour. You must be prepared to complete paid tasks that require one hour of uninterrupted work, though many are shorter.

Qualifications

• BS, MS, or PhD in Computer Science, Software Engineering, or a related field.
• Professional experience building scalable web apps with JavaScript/TypeScript.
• Ability to solve LeetCode Medium to Hard problems in JavaScript.
• Deep knowledge of the Event Loop, closures, prototypical inheritance, and async patterns (Promises, async/await).
• Code quality: clean, modular ES6+ code with readability in mind.
• Attention to security and memory-leak risks in model-generated code.

Responsibilities

• Evaluate AI-generated JavaScript/TypeScript for functional correctness and best practices.
• Validate logic and reasoning in AI explanations for complex solutions.
• Execute model-generated scripts in Node.js or browser consoles to verify behavior.
• Annotate model performance and identify inefficient or deprecated methods.
• Provide feedback on frontend/backend architecture discussions.

Skills

JavaScript/TypeScript

ES6+ Proficiency

Code Quality

Problem Solving

Security Awareness

Education

BS/MS/PhD in CS/SE

Tools

Jest

Cypress

Webpack

Vite

Node.js

Job description

Prolific is seeking JavaScript Specialists to join our Expert Network to train and evaluate AI models using real engineering expertise. If you have the necessary experience, we’ll send you a quick 10- to 15-minute test to assess your skills, and if successful, you’ll be invited to join Prolific as a paid participant.

Researchers looking for your skills tend to pay up to $50 per hour. You must be prepared to complete paid tasks that require one hour of uninterrupted work, though many are shorter.