Senior JavaScript/TypeScript Engineer - AI Training (Remote)

Prolific; United States; Remote; USD 55,000 - 69,000; Full time

Job summary

Prolific is seeking JavaScript Experts to join our Expert Network and help train and evaluate AI models using real engineering expertise. You’ll complete a 10–15 minute test to assess fit, then be invited to participate and get paid for AI training tasks.

Researchers pay up to $50 per hour for tasks; many tasks are shorter. You’ll work from home with flexible hours, applying your JS/TS skills across Node.js and browser environments.

Qualifications

• BS/MS/PhD in CS/SE or related field.
• Experience building scalable web apps with JavaScript/TypeScript.
• Ability to solve LeetCode Medium–Hard problems in JavaScript.
• Deep knowledge of JS internals: Event Loop, closures, inheritance, async patterns.
• Commitment to clean, modular, ES6+ code and secure coding practices.

Responsibilities

• Evaluate AI-generated JavaScript/TypeScript for correctness and best practices.
• Audit AI explanations for logical soundness of algorithms.
• Run tests in Node.js or browser consoles to verify performance and output.
• Identify inefficiencies, deprecated syntax, and potential library issues.
• Provide structured feedback on frontend/backend architecture reasoning.

Skills

Web apps (JS/TS)

LeetCode (Medium–Hard)

Event Loop & Closures

Code quality

Security & correctness

Education

BS/MS/PhD in CS/SE

Tools

Jest

Cypress

Webpack

Vite

Job description

Prolific is seeking JavaScript Experts to join our Expert Network and help train and evaluate AI models using real engineering expertise. You’ll complete a 10–15 minute test to assess fit, then be invited to participate and get paid for AI training tasks.

Researchers pay up to $50 per hour for tasks; many tasks are shorter. You’ll work from home with flexible hours, applying your JS/TS skills across Node.js and browser environments.