Frontend Engineer - Remote

Julius Baer

Madrid, Spain

18 days ago

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Role details

Contract type

Permanent contract

Employment type

Full-time (> 32 hours)

Experience required

3 years minimum

Compensation

€187,200.0

Working hours

Regular working hours

Languages

English

Job source

www.buscojobs.com.es

Tech stack

HTML JavaScript (Programming Language) Artificial Intelligence Cascading Style Sheets (CSS) Command-Line Interface Code Generation Web Scraping Web Development Semantic HTML Large Language Models Pixel Perfect Front End Software Development

Job description

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 **×.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 **px but collapses at **px.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 **px, 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.#J-*****-Ljbffr

Requirements

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.

About the company

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 .

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