Role Description We're 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'll send you a quick 10- to 15-minute test to assess your skills. If successful, you'll be invited to join Prolific as a participant, where you'll get paid to help AI understand and produce high-quality frontend code and design implementation. Researchers looking for your skills tend to pay up to $40/hr, depending on skills and experience. You must be prepared to complete paid tasks that require one hour of uninterrupted work, though many are shorter. Qualifications - 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. Requirements - 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 they are technically sound. - 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 (e.g., axe, Lighthouse), and cross-browser testing platforms. Benefits - Competitive pay rates. - Flexible hours. - Ability to work from home.

Role Description We're 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'll send you a quick 10- to 15-minute test to assess your skills. If successful, you'll be invited to join Prolific as a participant, where you'll get paid to help AI understand and produce high-quality frontend code and design implementation. Researchers looking for your skills tend to pay up to $40/hr, depending on skills and experience. You must be prepared to complete paid tasks that require one hour of uninterrupted work, though many are shorter. Qualifications - 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. Requirements - 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 they are technically sound. - 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. Benefits - Competitive pay rates. - Flexible hours. - Ability to work from home.

• Design, develop, enhance, debug, implement, and maintain software • Troubleshoot system problems and issues related to software and develop fixes • Code software to adhere to designs supporting business requirements and customers • Consult with project teams and end users to identify software requirements and enhancements • Resolve problems with software developed and respond to suggestions for enhancements and improvements • Perform other duties as assigned

Role Description Are you ready to leverage your software development skills to build a platform that is transforming cybersecurity? As a Senior Software Engineer, Backend you will be part of a fast-paced, collaborative team developing our attack surface intelligence capabilities. You will be a critical contributor to the development and integration of reconnaissance technologies and products while also moving forward the state of engineering best practices in our cybersecurity platform. If you enjoy pivoting between different problems and meeting new challenges every day while developing solutions that are mission critical to the organization, this role is for you! Please note: This is a remote position based in the U.S. We can only hire U.S. citizens for this position due to federal government contract requirements. Here’s what you'll do - Develop and integrate cybersecurity testing and analysis systems with best-in-class cybersecurity platform - Build high-performance, resilient, scalable cloud-based software, microservices architecture and containers - Take software through CI/CD all the way to production and own its quality and availability - Utilize GCP platform to build and run highly-available software systems - Identify and resolve performance issues across systems and components - Collaborate on a cross-functional team, working with Product, Operations, and Platform Engineering - Integrate monitoring and alerting capabilities with backend modules to allow proactive improvements to availability and response times - Design, implement and deliver well-tested, scalable, highly available systems - Own and ideate technical solutions for product requirements and user stories - Actively engage and participate in design and code reviews - Offer guidance and support to junior team members, encouraging and cultivating a culture of continuous learning within the team Qualifications - 7+ years of experience in distributed-systems and backend software engineering - Strong Golang Required: 7+ years of experience minimum - Strong experience and understanding of microservices, REST API design, gRPC, unit testing, BDD testing - Strong design skills required – UML is a bonus; exposure to Domain Driven Design desirable - Experience with asynchronous messaging technologies such as Google PubSub, Kafka - In depth knowledge of NoSQL and RDBMS technologies - Strong experience with Docker, Kubernetes, Cloud Environments (GCP preferred) - Experience working on agile teams - Excellent communication and collaboration skills in all mediums - Experience developing scalable and observable microservice-based applications - Experience with GitOps and DevOps principles, practices and tools - A proven ability to thrive in a collaborative environment involving different stakeholders and subject matter experts Nice to have - Interest in security / penetration testing - Interest in GenAI and LLM technologies Benefits - $150,000 - $180,000 - Salary is determined by a combination of factors including location, level, relevant experience, and skills - The range displayed on each job posting reflects the minimum and maximum target for new hire salaries for the position across all US locations - The compensation package for this position may also include equity, and benefits