Senior Frontend Engineer: HTML/CSS for AI Code Training

prolificacademicltd; United States; Remote; USD 33,000 - 55,000; Full time

Benefits offered by this job

Flexible, remote participation

Up to $40/hr

Job summary

Prolific Academic Ltd. is seeking a senior frontend specialist to contribute HTML and CSS expertise to AI-driven frontend code evaluation. This flexible, task-based role offers remote participation after a short skills assessment.

Responsibilities include assessing generated markup for correctness, ensuring semantic structure, rendering code across browsers, and flagging accessibility and CSS issues. Rates are up to $40/hour, with pay tied to skills and experience.

Qualifications

• Bachelor's degree or higher in computer science, Software engineering, web development, or a related technical field.
• Professional experience as a senior frontend developer or UI engineer focused on HTML and CSS.
• Ability to build complex responsive layouts and components without frameworks.
• Expert knowledge of CSS cascade, specificity, box model, Flexbox, Grid, WCAG accessibility, and browser compatibility.
• Strong standards for semantic HTML and maintainable CSS, including BEM, design tokens, and current CSS practices.
• Mastery of HTML5 and modern CSS, including custom properties, animation, and current layout techniques.

Responsibilities

• Assess generated markup and styles for correctness, semantic structure, and adherence to frontend best practices.
• Check the technical accuracy of explanations for layout and styling decisions.
• Render code and inspect its appearance and behaviour across browsers.
• Flag accessibility problems, inefficient selectors, outdated markup, and invalid or unsupported CSS.
• Provide clear feedback on responsive layouts, component structure, and design system implementation.

Skills

Senior frontend developer

UI engineer

HTML

CSS

Responsive design

WCAG accessibility

Semantic HTML

BEM methodologies

Education

Bachelor's degree in CS or related field

Tools

Tailwind CSS

Sass/SCSS

CSS Modules

Job description

Prolific Academic Ltd. is seeking a senior frontend specialist to contribute HTML and CSS expertise to AI-driven frontend code evaluation. This flexible, task-based role offers remote participation after a short skills assessment.

Responsibilities include assessing generated markup for correctness, ensuring semantic structure, rendering code across browsers, and flagging accessibility and CSS issues. Rates are up to $40/hour, with pay tied to skills and experience.