Remote Frontend Engineer — Pixel-Perfect, Responsive UI

Itransition; Santa Cruz de Tenerife; Remote; EUR 86,000 - 110,000; Part time

Job summary

Mercor is seeking a Web Development Expert for a fully remote role. You will evaluate and replicate complex UI layouts, focusing on semantic HTML/CSS, responsive design, and accurate typography.

The role requires strong JS awareness and precise HTML/CSS craftsmanship to produce pixel-perfect results across viewports. Responsibilities include analyzing source code, comparing implementations, and justifying decisions with concrete, evidence-based notes.

Qualifications

• 3–8 years of professional web development experience in frontend or full-stack work.
• Fluency across web eras, including legacy layouts for layout.
• Command of hand-written HTML and CSS: semantic markup, flexbox, grid, media queries, and legacy float- and table-based layouts.
• Browser DevTools as muscle memory.
• Command-line comfort: unzipping archives, starting a static server, and untangling broken image references.
• Enough JavaScript to read scripts and understand their DOM impact.
• Professional written English for task justification.

Responsibilities

• Render a reference page and two candidate replications at 1920×1080; judge closeness to the original.
• Diff visual fidelity in detail: box model, typography, color, borders, image handling, z-order, and overflow.
• Read source of both attempts and grade construction quality; identify truly correct replication vs. superficially correct.
• Test responsiveness; identify defects like nav collapse at smaller viewports.
• Provide evidence-based justifications for all preferences with specific examples.
• Use the escape hatch to distinguish truly unfinishable tasks from hard ones.

Skills

HTML

CSS

Flexbox

Grid

Media queries

DevTools

JavaScript

English writing

Tools

DevTools

Job description

Mercor is seeking a Web Development Expert for a fully remote role. You will evaluate and replicate complex UI layouts, focusing on semantic HTML/CSS, responsive design, and accurate typography.

The role requires strong JS awareness and precise HTML/CSS craftsmanship to produce pixel-perfect results across viewports. Responsibilities include analyzing source code, comparing implementations, and justifying decisions with concrete, evidence-based notes.