Remote Frontend Engineer — Pixel-Perfect Web UI

Airbus; Albacete; Remote; EUR 91,000 - 130,000; Full time

Job summary

Mercor is seeking a seasoned Frontend Engineer to perform web-UI evaluation tasks remotely. You will compare reference pages and replicas at 1920×1080, analyzing fidelity across CSS, typography, layout, and responsiveness.

Strong emphasis on evidence-based justification and cross-browser behavior, with English-language communication expectations. Required are 3–8 years in frontend or full-stack web development, expertise in semantic HTML/CSS, modern layout techniques, and solid JavaScript

Qualifications

• 3–8 years of professional web development experience in frontend or full-stack work.
• Fluency with web-era layouts, including legacy techniques.
• Proficient hand-written HTML and CSS: semantic markup, flexbox, grid, media queries, legacy float/table layouts.
• Strong browser DevTools proficiency.
• Comfort with command-line tasks and local static server setups.
• Able to read a page's scripts and understand DOM impact.
• Professional written English for task justification.

Responsibilities

• Render a reference page and two candidate replications at 1920×1080. State which is closer, step by step.
• Diff visual fidelity: box model, typography, color, borders, images, z-order, overflow.
• Read source attempts and grade construction quality; identify genuinely correct vs looks-correct-only solutions.
• Test responsiveness and identify defects such as nav bars collapsing at smaller viewports.
• Provide evidence-cited justifications for each preference with concrete explanations.

Skills

HTML & CSS

JavaScript

Browser DevTools

Semantic markup

Accessibility basics

Job description

Mercor is seeking a seasoned Frontend Engineer to perform web-UI evaluation tasks remotely. You will compare reference pages and replicas at 1920×1080, analyzing fidelity across CSS, typography, layout, and responsiveness.

Strong emphasis on evidence-based justification and cross-browser behavior, with English-language communication expectations. Required are 3–8 years in frontend or full-stack web development, expertise in semantic HTML/CSS, modern layout techniques, and solid JavaScript