Javascript - Senior Developers - AI Training - Washington DC, USA

Prolific is building a large pool of quality human data used by AI developers, researchers, and organizations to gather insights from paid participants.

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, you'll complete a short assessment to evaluate your skills and suitability for AI tasks. Successful candidates will be invited to participate in paid AI training and evaluation projects.

Researchers looking for these skills tend to pay up to $50 per hour. Tasks may require one hour of uninterrupted work, though many are shorter.

What you'll bring

• BS, MS, or PhD in Computer Science, Software Engineering, or a closely related technical field
• Professional experience building scalable web applications using JavaScript/TypeScript
• Ability to solve LeetCode Medium to Hard-level problems in JavaScript independently
• Expert understanding of the Event Loop, closures, prototypical inheritance, and asynchronous patterns including Promises and async/await
• High standards for clean code, modularity, readability, and modern ES6+ practices
• Ability to identify logical flaws, memory leaks, and security vulnerabilities such as XSS and prototype pollution

What you'll be doing in the role

• Review AI-generated JavaScript and TypeScript code for correctness and best practices
• Audit AI-generated explanations for algorithmic and logical accuracy
• Execute scripts in Node.js or browser environments to validate output and performance
• Identify inefficient solutions, deprecated syntax, and hallucinated library methods
• Provide structured feedback on frontend and backend architecture reasoning

Key Technologies

• JavaScript (ES6+) and TypeScript
• React, Node.js, Vue, and Angular
• Jest, Cypress, Webpack, and Vite
• RESTful APIs, GraphQL, and server-side Node environments

Benefits

• Competitive pay rates up to $50 per hour
• Flexible working hours
• Remote work opportunities
• Opportunity to contribute to the development of advanced AI systems

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