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Frontend JavaScript Engineer

Alignerr

full-remotemidcontractfrontend Seattle, WA Today via LinkedIn

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Tags

JavaScriptES6+ReactVueDOM ManipulationPerformance ProfilingCode ReviewTechnical WritingAI TrainingRLHF

About the role

Role overview

Frontend JavaScript Engineer (AI Training) at Alignerr. You will review, critique, and improve AI-generated JavaScript code to ensure correctness, efficiency, and modern frontend best practices.

Contract: Hourly • Commitment: 10–40 hours/week • Location: Fully remote

What you’ll do

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

Who you are

  • Deep hands-on knowledge of core JavaScript concepts, including:
    • async/await, closures, 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 approach to evaluating and improving code quality
  • Clear written communicator able to explain technical reasoning plainly
  • Bachelor’s degree in Computer Science or 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 you’ll like it

  • Work on cutting-edge AI projects alongside leading AI research teams
  • Fully remote, flexible, task-based engineering work
  • Potential for ongoing work and contract extension

About Alignerr

Alignerr is a technology organization focused on AI training and evaluation. The role involves helping assess and improve AI-generated code so that next-generation AI tools write and understand JavaScript more like skilled engineers.

Scraped 4/12/2026

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