Web Development Expert - Fully Remote | Upto $90/hr Mercor

connects elite creative and technical talent with leading AI research labs. Headquartered in San Francisco, our investors include

Benchmark

,

General Catalyst

,

Peter Thiel

,

Adam D'Angelo

,

Larry Summers

, and

Jack Dorsey

.

Position:

Frontend Engineer Type:

Contract Compensation:

$90/hour Location:

Remote

Role Responsibilities Render a reference page and two candidate replications at 1920×1080. Judge which is the closer reproduction, state by state. Diff visual fidelity in detail: box model and spacing, typography (family, size, weight, line-height, letter-spacing), color and border treatment, image and asset handling, z-order, and overflow. Read the source of both attempts and grade construction quality. Distinguish a replication that is genuinely correct from one that merely looks correct at one viewport. Test responsiveness. Identify defects such as a nav bar that looks right at 1920px but collapses at 1400px. Write specific, evidence-cited justifications for every preference. Provide detailed explanations like "B nests the article body in a single absolutely-positioned div, so the text overlaps the footer below 1600px,



while A uses normal document flow." Use the "this task is broken" escape hatch with judgment. Distinguish a task that genuinely cannot be completed from one that is merely hard.

Qualifications Must-Have 3–8 years

of professional web development experience in frontend or full-stack work. Fluency across web eras, including legacy layouts like used 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 an archive, standing up a static local server, and untangling a broken image reference. Enough

JavaScript

to read a page's scripts and understand their DOM impact. Professional written English for task justification.

Preferred Prior

RLHF

, preference-labeling, model-evaluation, or structured code-review work. Pixel-perfect design-to-code experience. Accessibility expertise ( ARIA

, semantic landmarks, heading hierarchy). Familiarity with how

LLMs

fail at code generation. Web scraping, archiving, or DOM-parsing background. More than one completed

Mercor

project and availability in contiguous multi-hour blocks.

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