Web Development Expert
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About the job 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. Application Process (Takes 20–30 mins to complete) Upload resume AI interview based on your resume Submit form Resources & Support For details about the interview process and platform information, please check: https://talent.docs.mercor.com/welcome For any help or support, reach out to: PS: Our team reviews applications daily. Please complete your AI interview and application steps to be considered for this opportunity.
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