Frontend Engineer – Web UI Evaluation

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📋 Description

• Compare a reference webpage against two AI-generated frontend implementations
• Render candidate pages side by side at desktop resolution and assess fidelity to the target
• Evaluate visual similarity, layout accuracy, implementation quality, and responsive behavior
• Identify, rank, and describe significant defects; flag ties, ambiguities, and technically broken evaluation items
• Inspect HTML, CSS, DOM structure, computed styles, the cascade, network activity, and assets using browser developer tools
• Evaluate semantic markup, flexbox, CSS Grid, media queries, float- or table-based layouts, and accessibility-related implementation quality
• Perform pixel-level analysis of box-model behavior, typography, colors, borders, backgrounds, images, stacking, overflow, clipping, and positioning
• Run provided webpages locally using terminal-based development workflows
• Write structured, technically actionable rationales for preference decisions
• Apply evaluation standards consistently and contribute human preference data to improve AI-generated frontend code

🎯 Requirements

• 3+ years of professional frontend or full-stack web development experience
• Strong proficiency with HTML and CSS
• Deep understanding of semantic markup, flexbox, CSS Grid, media queries, and responsive design
• Ability to read and reason about legacy float- and table-based layouts
• Strong working knowledge of browser developer tools, including element inspection, computed styles, the box model, and network inspection
• Sufficient JavaScript knowledge to understand scripts and DOM behavior
• Comfortable using a terminal to run and inspect local web projects
• Strong ability to identify visual differences at a detailed, pixel-level standard
• Excellent written English and ability to justify technical evaluation decisions precisely
• Desktop or laptop capable of displaying a browser window at 1920px width or greater
• Administrator rights on the machine used for project work
• Ability to install and run a local development or static-server environment
• Work must be completed without using confidential or proprietary information belonging to any employer, client, institution, or other third party
• H1-B and STEM OPT support is unavailable for this engagement
• Experience translating Figma, PSD, or comparable designs into production frontend code is highly valued
• Prior code review, technical assessment, RLHF, preference evaluation, or AI model evaluation experience is advantageous
• Familiarity with WCAG, ARIA, accessibility testing, web scraping, or DOM parsing is beneficial
• Experience with common failure patterns in LLM-generated frontend code is highly valued

🏖️ Benefits

• Flexible scheduling based on project requirements
• Fully remote work
• Part-time independent contractor engagement
• Projects may be extended, shortened, or concluded based on project needs and performance

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