Frontend Evaluation Engineer (Remote, Part-Time)

24-Mag Llc; New York (NY); Remote; USD 6,612,000 - 11,021,000; Part time

Job summary

24-MAG LLC seeks experienced frontend and full-stack engineers for a part-time, independent contractor engagement. The role centers on evaluating AI-generated frontend code by comparing against reference designs, testing HTML/CSS, semantics, responsiveness, and visual fidelity across viewports.

Responsibilities include side-by-side rendering, browser DevTools inspection, and writing precise rationales for decisions, while identifying defects.

Qualifications

• 3+ years of professional frontend or full-stack web development experience.
• Strong proficiency with HTML and CSS.
• Deep understanding of semantic markup, flexbox, CSS Grid, media queries, and responsive design.
• Ability to read and reason about legacy float- and table-based layouts.
• Strong working knowledge of browser developer tools including element inspection, computed styles, box model, and network inspection.
• Sufficient JavaScript knowledge to understand scripts and DOM behaviour.

Responsibilities

• Compare a reference webpage against two AI-generated frontend implementations.
• Render candidate pages side by side at desktop resolution and determine fidelity to target.
• Evaluate visual similarity, layout accuracy, and implementation quality.
• Identify defects and rank by impact; flag ties and ambiguous cases.
• Inspect DOM and computed styles using browser DevTools to diagnose visual differences.

Skills

HTML

CSS

Frontend development

Browser debugging

JavaScript knowledge

Chrome DevTools

Git

Tools

Chrome DevTools

Git

Job description

24-MAG LLC seeks experienced frontend and full-stack engineers for a part-time, independent contractor engagement. The role centers on evaluating AI-generated frontend code by comparing against reference designs, testing HTML/CSS, semantics, responsiveness, and visual fidelity across viewports.

Responsibilities include side-by-side rendering, browser DevTools inspection, and writing precise rationales for decisions, while identifying defects.