Javascript - Senior Developers - AI Training - Milwaukee, US

Prolific is building a global platform for high-quality human data used by AI developers, researchers, and organizations.

The role

We're looking for JavaScript Experts to join an Expert Network to help train and evaluate cutting-edge AI models using real engineering expertise. Candidates complete a short assessment to evaluate suitability for AI tasks. Successful applicants can participate in paid remote tasks focused on training and evaluating AI models.

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 adherence to modern ES6+ standards
• Ability to identify logical flaws, memory leaks, and security vulnerabilities such as XSS and prototype pollution in generated code

What you'll be doing in the role

• Review AI-generated JavaScript and TypeScript code for correctness and best practices
• Audit AI reasoning and explanations for complex algorithmic solutions
• Execute generated 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, Angular
• Jest, Cypress, Webpack, Vite
• RESTful APIs, GraphQL, server-side Node.js logic

Why join as a Participant

• Competitive pay rates
• Flexible working hours
• Remote work opportunities
• Opportunity to contribute to the development of advanced AI systems

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