Javascript - Senior Developers - AI Training - Louisville, US

Prolific; United States; Remote; USD 55,000 - 83,000; Full time

Benefits offered by this job

Flexible hours

Work from home

Competitive pay

Job summary

Prolific is seeking a JavaScript Specialist- AI Training to join its Expert Network. You will evaluate and train AI systems by reviewing JavaScript/TypeScript code, running tests, and providing concrete feedback.

The role offers remote work in the United States, flexible hours, and competitive pay up to $50 per hour for qualified experts who can demonstrate deep knowledge of ES6+ and modern JS tooling.

Qualifications

• BS, MS, or PhD in Computer Science or related field.
• Professional experience building scalable web apps with JavaScript/TypeScript.
• Ability to solve LeetCode Medium–Hard problems in JavaScript.
• Deep understanding of the Event Loop, closures, and async patterns.
• Code quality with modular, readable ES6+ code.
• Ability to spot security issues and memory leaks in code.

Responsibilities

• Review AI-generated JavaScript/TypeScript for correctness.
• Audit AI explanations for logic and reasoning.
• Run model scripts in Node.js or browser consoles to verify results.
• Provide feedback on performance, syntax, or library usage.
• Suggest improvements to frontend/backend architecture discussions.

Skills

JavaScript

TypeScript

Event Loop

Async/await

Code quality

Security awareness

LeetCode

Education

BS/MS/PhD in CS or related field

Tools

Jest

Cypress

Webpack

Vite

Job description

JavaScript Specialist- AI Training

About Prolific

Prolific is not just another player in the AI space – we are building the biggest pool of quality human data in the world.

Over 35,000 AI developers, researchers, and organizations use Prolific to gather data from paid study participants with a wide variety of experiences, knowledge, and skills.

The role

We’re looking for JavaScript Experts to join our Expert Network to help train and evaluate cutting-edge 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 suitability for AI tasks. If successful, you’ll be invited to join Prolific as a participant, where you’ll get paid to train and evaluate powerful AI models.

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.

What you’ll bring

• Education: a BS, MS, or PhD in Computer Science, Software Engineering, or a closely related technical field.
• Professional Experience: professional experience building scalable web applications using JavaScript/TypeScript.
• Coding Proficiency: ability to solve LeetCode Medium to Hard-level problems in JavaScript independently.
• Deep Domain Knowledge: expert understanding of the Event Loop, closures, prototypical inheritance, and asynchronous patterns (Promises, async/await).
• Code Quality: a high standard for clean code, including modularity, readability, and adherence to modern ES6+ standards.
• Attention to Detail: ability to spot subtle logical flaws, memory leaks, or security vulnerabilities (e.g., XSS, prototype pollution) in model-generated code.

What you’ll be doing in the role

• Evaluate Code Accuracy: review AI-generated JavaScript and TypeScript code for functional correctness and adherence to best practices.
• Validate Logic & Reasoning: audit the step-by-step explanations provided by AI for complex algorithmic solutions to ensure they are logically sound.
• Conduct Execution Testing: execute model-generated scripts in appropriate environments (Node.js or Browser consoles) to verify performance and output.
• Annotate Model Performance: identify areas where a model provides inefficient solutions, deprecated syntax, or hallucinated library methods.
• Refine Technical Logic: provide structured feedback on how models reason through frontend or backend architecture discussions.

Key Technologies

• Core Language: expert mastery of JavaScript (ES6+) and TypeScript.
• Frameworks: extensive experience with React , Node.js , Vue , or Angular.
• Testing & Tools: proficiency with Jest , Cypress , Webpack , and Vite.
• Backend & API: strong understanding of RESTful APIs, GraphQL, and server-side logic in a Node environment.

Why Prolific is a great platform to join as a Participant

Joining our Expert Network will give you the chance to influence the AI models of the future using professional expertise. Once you pass our assessment, you can join Prolific in just 15 minutes, and start enjoying competitive pay rates, flexible hours, and the ability to work from home.

We’ve built a unique platform that connects researchers and companies with a global pool of participants, enabling the collection of high-quality, ethically sourced human behavioural data and feedback. This data is the cornerstone of developing more accurate, nuanced, and aligned AI systems.

We believe that the next leap in AI capabilities won’t come solely from scaling existing models, but from integrating diverse human perspectives and behaviours into AI development. By providing this crucial human data infrastructure, Prolific is positioning itself at the forefront of the next wave of AI innovation – one that reflects the breadth and the best of humanity.

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Privacy Statement

By submitting your application, you agree that Prolific may collect your personal data for recruiting and global organisation planning. Prolific’s Candidate Privacy Notice explains what personal information Prolific may process, where Prolific may process your personal information, its purposes for processing your personal information, and the rights you can exercise over Prolific’s use of your personal information.