Senior JavaScript Engineer for AI Training & Evaluation

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

Job summary

Prolific seeks a JavaScript Specialist for AI training to join our Expert Network. You’ll review and test AI-generated JavaScript/TypeScript code, assess logic, and provide structured feedback.

Expect to complete short skill tests, then participate as a paid contributor working from home with flexible hours and competitive pay. Ideal candidates have a BS/MS/PhD in CS or related field and hands-on experience building scalable web apps with JavaScript and TypeScript, plus strong knowledge of ES6+

Qualifications

• Education: a BS, MS or PhD in Computer Science, Software Engineering, or related field.
• Professional Experience: building scalable web apps with JavaScript/TypeScript.
• Coding Proficiency: solve LeetCode between medium and hard only in JavaScript.
• Deep Domain Knowledge: event loop, closures, prototype inheritance, async patterns.
• Code Quality: modularity, readability, ES6+ standards.
• Attention to Detail: spot memory leaks, security issues (XSS, prototype pollution).

Responsibilities

• Evaluate Code Accuracy: review AI-generated JS/TS for correctness.
• Validate Logic & Reasoning: audit AI explanations for algorithms.
• Conduct Execution Testing: run scripts in Node.js or browser consoles.
• Annotate Model Performance: identify inefficient or deprecated methods.
• Refine Technical Logic: provide feedback on frontend/backend architecture reasoning.

Skills

JavaScript

TypeScript

Web development

Code quality

Event loop

Asynchronous patterns

Security awareness

Education

BS/MS/PhD in CS or related

Tools

Jest

Cypress

Webpack

Vite

Job description

Prolific seeks a JavaScript Specialist for AI training to join our Expert Network. You’ll review and test AI-generated JavaScript/TypeScript code, assess logic, and provide structured feedback.

Expect to complete short skill tests, then participate as a paid contributor working from home with flexible hours and competitive pay. Ideal candidates have a BS/MS/PhD in CS or related field and hands-on experience building scalable web apps with JavaScript and TypeScript, plus strong knowledge of ES6+