Frontend Engineer

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Position: Frontend Engineer

Type: Freelance Hourly Contract

Compensation: $90/hour

Location: Remote

About the Opportunity

This opportunity is for experienced Frontend Engineers and Full-Stack Developers interested in evaluating AI-generated web interfaces and code.

The work focuses on comparing AI-generated frontend implementations against real-world reference websites, assessing both visual fidelity and underlying code quality.

This is an evaluation-focused role rather than a traditional development position. The key requirement is the ability to identify how a webpage is constructed, recognize technical shortcuts, and provide precise, evidence-based evaluations.

What You'll Do
- Render a reference webpage and two AI-generated implementations at a 1920×1080 viewport and evaluate which version most accurately reproduces the reference.
- Compare visual fidelity across different interface states,



including layout, spacing, typography, colors, borders, images, layering, and overflow behavior.
- Review the source code of AI-generated implementations and assess HTML structure, CSS architecture, responsiveness, maintainability, and implementation quality.
- Identify technical shortcuts such as excessive hardcoded positioning, unnecessary absolute positioning, poorly structured markup, or image-based recreations.
- Test responsive behavior across different viewport sizes and identify layout or usability defects.
- Use browser DevTools to inspect elements, computed styles, DOM structure, and interactive states.
- Provide specific, evidence-based written justifications explaining why one implementation is stronger than another.
- Identify genuinely broken evaluation tasks while distinguishing them from tasks that are simply challenging.

Required Qualifications
- 3–8 years of professional web develo

📌 Frontend Engineer (Pontevedra)
🏢 Synthires
📍 Pontevedra