Frontend JavaScript Engineer

Role overview

As a Frontend JavaScript Engineer (AI Training), you will evaluate, critique, and improve AI-generated JavaScript code. Your feedback helps ensure next-generation AI tools produce frontend code that behaves like great software engineers.

Contract: Hourly, 10–40 hours/week Work style: Fully remote, flexible schedule (asynchronous)

What you’ll do

• Evaluate AI-generated JavaScript for:
  • correctness
  • efficiency
  • adherence to ES6+ standards
• Review DOM manipulation approaches and identify performance issues or anti-patterns
• Tackle UI/UX problems to test the model’s ability to produce responsive, interactive frontend solutions
• Detect bugs and suboptimal frontend logic and provide clearly optimized alternatives
• Write human-readable documentation explaining:
  • state flow
  • event handling
  • code structure
• Work independently and asynchronously on your own schedule

Requirements

• Deep hands-on knowledge of core JavaScript concepts, including:
  • async/await
  • closures
  • event loop
  • 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 approach to evaluating and improving code quality
• Clear written communication to explain technical reasoning in plain terms
• Bachelor’s degree in Computer Science or a related technical field (preferred)

Nice to have

• 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 or code documentation

Why join Alignerr

• Contribute to cutting-edge AI projects alongside leading AI research labs and teams
• Fully remote and flexible contract work
• Opportunity for ongoing work and contract extension as new projects launch