UI Lead Frontend Engineer
Simplex Services Ltd · London, England ·
Role Overview We are looking for a highly experienced UI Lead Frontend engineer with strong expertise in modern frontend technologies, Adobe Experience Manager (AEM), and AI-powered development tools such as Anthropic Claude and Claude Code.
The ideal candidate will be responsible for designing scalable, high-performance, reusable, and maintainable frontend architectures for enterprise digital platforms. This role requires strong hands-on technical leadership, deep understanding of AEM-based digital experiences, and the ability to leverage Generative AI to accelerate software development, improve engineering productivity, and modernize UI delivery.
They are expecting candidates based in London who are comfortable working onsite 4 to 5 days per week. Key Responsibilities UI Architecture & Technical Leadership Define and drive enterprise-wide UI engineering, frontend standards, and best practices.
Deliver and implement scalable frontend solutions using React, Next.js, TypeScript, JavaScript, HTML5, and CSS3. Design reusable component libraries, design systems, and micro-frontend architectures. Establish best practices for performance optimization, accessibility (WCAG), SEO, security, and responsive design.
Adobe Experience Manager (AEM) Expertise Design and implement frontend architectures integrated with Adobe Experience Manager (AEM) . Work with AEM Sites, Core Components, editable templates, client libraries, and content fragments.
Integrate frontend applications with AEM Content Fragment APIs, GraphQL, and REST services. Understand AEM as a Cloud Service, including deployment pipelines, caching, and CDN considerations. Establish reusable AEM-compatible UI components and authoring-friendly design patterns.
Generative AI & Claude Integration Demonstrate practical experience with Anthropic Claude and Claude Code for AI-assisted software engineering. Use Claude to accelerate UI development, code generation, refactoring, debugging, and documentation.
Define AI-assisted engineering workflows across the frontend development lifecycle. Engineering Excellence & DevOps Define frontend CI/CD practices using GitHub Actions, Azure DevOps, Jenkins, or equivalent platforms. Establish unit, integration, and end-to-end testing strategies using Jest, React Testing Library, Playwright, or Cypress.
Drive Core Web Vitals improvements, bundle optimization, caching, and rendering strategies. Establish frontend code quality, security, and observability standards. Collaborate with UX/UI designers, product owners, enterprise architects, and engineeri...
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