HTML/CSS - Senior Developers - AI Training - Charlotte, USA

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

Benefits offered by this job

Flexible, remote participation

Job summary

prolificacademicltd is seeking a senior frontend specialist to contribute HTML and CSS expertise to evaluating AI-generated frontend code. This flexible, task-based participation offers payment per task, with rates set by skill and experience and some tasks requiring an uninterrupted hour.

Responsibilities include assessing markup, ensuring semantic structure, testing rendering across browsers, checking accessibility, and providing structured feedback on responsive layouts and design system

Qualifications

• Bachelor’s degree or higher in computer science, software engineering, web development, or 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 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.

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• Flag accessibility problems, inefficient selectors, outdated markup, and invalid or unsupported CSS.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

Job description

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.