At a Glance
- Tasks: Join our team to train AI by evaluating and refining HTML/CSS code.
- Company: Leading tech firm focused on AI development in Colchester, UK.
- Benefits: Earn up to $40/hr with flexible tasks and remote work options.
- Other info: Dynamic role with opportunities for professional growth and skill enhancement.
- Why this job: Make a real impact on AI technology while honing your frontend skills.
- Qualifications: BSc in Computer Science or related field; senior frontend experience required.
The predicted salary is between 32000 - 48000 € per year.
We are looking for Senior HTML/CSS Developers to join our Expert Network to help train and evaluate cutting‑edge AI models. If you have a background in Software Engineering or Frontend Development, we will test your skills with a short assessment. Successful candidates will participate in paid tasks that involve writing and reviewing high‑quality frontend code and design implementation.
What you’ll bring
- Educational Background: a BSc or higher in Computer Science, Software Engineering, Web Development, or a closely related technical field.
- Professional Experience: real‑world experience as a Senior Frontend Developer or UI Engineer specialising in HTML/CSS.
- Coding Proficiency: ability to independently build complex, responsive layouts and components without relying on frameworks or libraries.
- Deep Domain Knowledge: expert understanding of the CSS cascade, specificity, the box model, Flexbox, CSS Grid, accessibility standards (WCAG), and cross‑browser compatibility.
- Code Quality: a high standard for clean, semantic markup and maintainable CSS, including adherence to BEM methodology, design tokens, and modern CSS standards.
What you’ll be doing in the role
- Evaluate Code Accuracy: review AI‑generated HTML/CSS for functional correctness, semantic structure, and adherence to best practices.
- Validate Logic & Reasoning: audit the step‑by‑step explanations provided by AI for layout solutions and styling approaches to ensure technical soundness.
- Conduct Execution Testing: render model‑generated markup and stylesheets in appropriate environments to verify visual output and cross‑browser behaviour.
- Annotate Model Performance: identify areas where a model produces inaccessible markup, inefficient selectors, deprecated attributes, or hallucinated CSS properties.
- Refine Technical Logic: provide structured feedback on how models reason through responsive design, component architecture, or design system implementation.
Key Technologies
- Core Languages: expert mastery of HTML5 and CSS3/4, including custom properties, animations, and modern layout systems.
- Frameworks & Methodologies: extensive experience with Tailwind CSS, SASS/SCSS, or CSS Modules, and familiarity with component‑driven design systems.
- Testing & Tools: proficiency with browser DevTools, accessibility auditing tools (axe, Lighthouse), and cross‑browser testing platforms.
Remuneration
Researchers typically offer up to $40/hr, depending on skills and experience. Tasks require one hour of uninterrupted work, though many are shorter.
HTML/CSS - Senior Developers - AI Training - Colchester, UK employer: Prolific
Join a forward-thinking company in Colchester that values innovation and expertise in AI training. As a Senior HTML/CSS Developer, you'll enjoy a collaborative work culture that fosters professional growth and offers competitive remuneration for your skills. With opportunities to engage in meaningful projects that shape the future of technology, this role is perfect for those seeking a rewarding career in a dynamic environment.
StudySmarter Expert Advice🤫
We think this is how you could land HTML/CSS - Senior Developers - AI Training - Colchester, UK
✨Tip Number 1
Network like a pro! Reach out to fellow developers, attend meetups, and join online communities. The more connections we make, the better our chances of landing that dream job.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your best HTML/CSS projects. We want to see what you can do, so make sure it’s easy to navigate and highlights your expertise.
✨Tip Number 3
Prepare for interviews by brushing up on common coding challenges and technical questions. We recommend practicing with mock interviews to build confidence and refine your answers.
✨Tip Number 4
Apply through our website! It’s the easiest way to get noticed. Plus, we love seeing candidates who take the initiative to connect directly with us.
We think you need these skills to ace HTML/CSS - Senior Developers - AI Training - Colchester, UK
Some tips for your application 🫡
Show Off Your Skills:Make sure to highlight your experience with HTML and CSS in your application. We want to see how you've tackled complex layouts and components, so don’t hold back on showcasing your best work!
Be Clear and Concise:When writing your application, keep it straightforward. We appreciate clarity, so avoid jargon and get straight to the point about your qualifications and experiences that relate to the role.
Tailor Your Application:Take a moment to customise your application for this specific role. Mention your familiarity with the key technologies listed in the job description, like Flexbox or CSS Grid, to show us you’re the right fit.
Apply Through Our Website:We encourage you to apply directly through our website. It’s the easiest way for us to receive your application and ensures you’re considered for the role without any hiccups!
How to prepare for a job interview at Prolific
✨Know Your Code Inside Out
Make sure you’re well-versed in HTML5 and CSS3/4. Brush up on your understanding of the CSS cascade, Flexbox, and Grid. Be ready to discuss how you’ve implemented these in past projects, as this will show your depth of knowledge.
✨Showcase Your Problem-Solving Skills
Prepare to explain your thought process when reviewing code. Think about how you would evaluate AI-generated HTML/CSS for accuracy and best practices. Practising with real-world examples can help you articulate your approach clearly.
✨Familiarise Yourself with Accessibility Standards
Since accessibility is key, make sure you know WCAG guidelines inside out. Be prepared to discuss how you ensure your code is accessible and what tools you use for auditing. This will demonstrate your commitment to quality and inclusivity.
✨Practice Makes Perfect
Before the interview, take some time to review your past work and even do a mock assessment. This will help you get comfortable with articulating your coding decisions and the rationale behind them, which is crucial for this role.
