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Mid-Level
Frontend JavaScript Engineer
Confirmed live in the last 24 hours
Labelbox
Compensation
$60.00 - $90.00/hr
San Francisco
Remote
Posted December 18, 2025
Job Description
JavaScript Developer - $90/hr Remote - Alignerr
- Location: Remote
About the job
At Alignerr, we partner with the world’s leading AI research teams and labs to build and train cutting-edge AI models.
Organization: Alignerr Position: JavaScript Developer Type: Hourly Contract Compensation: $60–$90 /hour Location: Remote Commitment: 10–40 hours/week
Role Responsibilities (Training support will be provided)
- Evaluate AI-generated JavaScript code for DOM manipulation efficiency and ES6+ standards.
- Solve complex UI/UX challenges to test the model's ability to create responsive and interactive elements.
- Create human-readable documentation explaining the flow of state and event handling in scripts.
- Identify bugs or anti-patterns in AI-generated frontend logic and provide optimized alternatives.
Requirements
- Bachelor's degree or higher in Computer Science or a related technical field preferred.
- Deep familiarity with core JavaScript concepts (async/await, closures, DOM manipulation).
- 3-5 years of experience with modern frameworks like React, Node.js, or Vue.
Preferred:
- Experience with data labeling, RLHF, or other AI training projects.
Application Process (Takes 15-20 min)
- Submit your resume
- Complete a short screening
- Project matching and onboarding
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