HTML/CSS Senior Developer – Newcastle

Prolific is recruiting senior HTML/CSS developers to join their expert network for AI model training, evaluation, and validation. Candidates will review AI-generated markup for correctness, semantic structure, and adherence to standards, including accessibility and cross-browser compatibility. The role involves providing feedback on model reasoning and improving layout implementation using advanced CSS techniques, including Flexbox and CSS Grid, with minimal reliance on frameworks. Technical skills in modern HTML and CSS, as well as experience with testing and accessibility tools, are essential. A background in software or web development with expertise in responsive design and semantic markup is required. This position offers flexible, remote participation focusing on high-quality frontend development tasks.