HTML/CSS - Senior Developers - AI Training - Canterbury, UK

prolificacademicltd; Stati Uniti; Remoto; USD 33.000 - 55.000; Part-time

Descrizione del lavoro

Prolific Academic Ltd is seeking a senior frontend developer reviewer to contribute HTML and CSS expertise to AI systems that generate frontend code. This flexible, task-based participation begins with a short skills assessment and may lead to invited reviews, code testing, and structured feedback.

Tasks are paid at rates dependent on skills and experience; some sessions last an hour, many are shorter. Remote participation is possible, with rates up to $40 per hour.

Competenze

• Bachelor's degree or higher in computer science, software engineering, web development, or a related technical discipline.
• Professional experience as a senior frontend developer or UI engineer focused on HTML and CSS.
• Ability to build complex responsive layouts and components without relying on frameworks or libraries.
• Expert knowledge of the CSS cascade, specificity, box model, Flexbox, Grid, WCAG accessibility, and browser compatibility.

Mansioni

• 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• Flag accessibility problems, inefficient selectors, outdated markup, and invalid or unsupported CSS.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.

Conoscenze

HTML

CSS

Responsive layouts

Semantic HTML

Accessibility (WCAG)

BEM / design tokens

Cross-browser testing

Formazione

Bachelor's degree in CS or related field

Strumenti

Tailwind CSS

Sass/SCSS

CSS Modules

Descrizione del lavoro

Role overview

Contribute senior HTML and CSS expertise to the training and evaluation of AI systems that generate frontend code. This is a flexible, task-based participant opportunity: after a short skills assessment, you may be invited to review code, test rendered results, and give structured feedback. Tasks are paid, with rates set according to skills and experience; some require an uninterrupted hour, while many are shorter.

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.

Requirements

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

Nice to have

• Experience with Tailwind CSS, Sass/SCSS, CSS Modules, and component-based design systems.
• Familiarity with browser developer tools, accessibility audit tools such as axe or Lighthouse, and cross-browser testing services.

Benefits and work setup

• Flexible, remote participation, subject to passing a 10-15 minute skills assessment.
• Researchers may offer rates of up to $40 per hour, depending on expertise and experience; this is not a guaranteed rate.