Senior HTML/CSS Frontend for AI Model Training (Remote)

Prolific Academic Ltd

United States

Remote

USD 45,000 - 65,000

Full time

14 days+

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Benefits offered by this job

Work from home

Competitive pay rates

Flexible hours

Job summary

Prolific is seeking Senior HTML/CSS Developers to join our Expert Network in the USA. You will evaluate and refine AI-generated frontend code, ensuring clean markup, accessibility, and cross-browser compatibility.

A background in software engineering or frontend development is preferred, with a test to assess your skills. Role involves reviewing AI outputs, conducting execution testing, and providing structured feedback to improve model behavior.

Qualifications

Educational background: a BSc or higher in CS, SE, Web Development or related field.
Professional experience as a Senior Frontend Developer or UI Engineer in HTML/CSS.
Ability to build complex, responsive layouts without heavy frameworks.
Deep knowledge of CSS cascade, specificity, box model, Flexbox and Grid.
Commitment to clean, semantic markup and modern CSS standards.

Responsibilities

Evaluate AI-generated HTML/CSS for accuracy and semantic structure.
Audit model explanations for layout solutions and styling approaches.
Render markup/styles in environments to verify visuals and cross-browser behaviour.
Annotate accessibility, selectors efficiency, and deprecated attributes.
Provide feedback on responsive design, architecture and design system implementations.