Frontend JavaScript Engineer

Role overview

As a Frontend JavaScript Engineer (AI Training), you will evaluate, critique, and improve AI-generated JavaScript code. Your work helps ensure next-generation AI tools produce correct, efficient, and maintainable frontend solutions.

This is a fully remote, flexible hourly contract (10–40 hours/week). Training and onboarding support are provided, and prior AI experience is not required.

Responsibilities

• Evaluate AI-generated JavaScript for correctness, efficiency, and modern ES6+ standards
• Review DOM manipulation approaches and identify performance issues or anti-patterns
• Solve complex UI/UX challenges to test AI responsiveness and interactivity
• Identify bugs and suboptimal frontend logic and propose clearly optimized alternatives
• Write human-readable documentation covering state flow, event handling, and code structure
• Work independently and asynchronously on your own schedule

Requirements

• Deep hands-on knowledge of core JavaScript concepts, including:
  • async/await, closures, the event loop, and DOM manipulation
• 3–5 years of practical experience with modern frameworks such as React, Vue, or Node.js
• Strong instincts for clean, maintainable, efficient frontend code
• Detail-oriented, systematic code-quality evaluation mindset
• Clear technical communication in plain terms
• Bachelor’s degree in Computer Science (or related) preferred

Nice to haves

• Experience with data labeling, RLHF, or other AI training/evaluation projects
• Familiarity with testing frameworks, code review workflows, or frontend performance profiling
• Background in technical writing and code documentation