Frontend JavaScript Engineer

Alignerr is a company focused on improving AI-generated code, and they are seeking experienced Frontend JavaScript Engineers to evaluate and enhance the quality of AI-generated JavaScript code. The role involves assessing code correctness, efficiency, and adherence to modern standards, while working independently on a flexible schedule.

Responsibilities:

• Evaluate AI-generated JavaScript code for correctness, efficiency, and adherence to modern ES6+ standards
• Assess DOM manipulation approaches and identify performance issues or anti-patterns
• Solve complex UI/UX challenges to test the model's ability to produce responsive and interactive frontend solutions
• Identify bugs and suboptimal patterns in AI-generated frontend logic and provide clearly optimized alternatives
• Write human-readable documentation explaining state flow, event handling, and code structure
• Work independently and asynchronously — fully on your own schedule

Requirements:

• Deep, hands-on knowledge of core JavaScript concepts — 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, and efficient frontend code
• Naturally detail-oriented with a systematic approach to evaluating and improving code quality
• Clear written communicator who can explain technical reasoning in plain terms
• Bachelor's degree in Computer Science or a related technical field preferred
• Experience with data labeling, RLHF, or other AI training or evaluation projects
• Familiarity with testing frameworks, code review workflows, or frontend performance profiling
• Background in technical writing or code documentation