Frontend JavaScript Engineer
Alignerr
full-remotemidcontractfrontend Seattle, WA Today via LinkedIn
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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