UI Front end Lead engineer – AEM & Generative AI (Claude)

Vallum Associates; Greater London; On-site; GBP 100,000 - 140,000; Full time

Job summary

Vallum Associates in London seeks a UI Lead Frontend Engineer with 10+ years of frontend development, enterprise UI architecture and technical leadership. You will drive architecture, design and hands-on coding for large-scale React/Next.js applications integrated with AEM.

The ideal candidate combines strong AEM experience, expertise with GraphQL/REST APIs, Claude AI tooling, and a background in building scalable design systems, performance optimizations and robust CI/CD practices.

Qualifications

• 10+ years of frontend/UI engineering experience.
• Strong hands-on experience with AEM Sites, Core Components, editable templates and client libraries.
• Experience integrating frontend applications with AEM Headless, GraphQL and REST APIs.
• Proven expertise in frontend architecture, reusable components, design systems and performance optimisation.
• Hands-on experience with Claude AI for software development.
• Good understanding of AWS, CI/CD pipelines, Git and automated testing.
• Strong technical leadership, stakeholder communication and team mentoring skills.

Responsibilities

• Lead frontend architecture, technical design and development.
• Build scalable React/Next.js applications integrated with AEM.
• Establish reusable UI components, coding standards and engineering best practices.
• Leverage Claude AI to improve development productivity and code quality.
• Drive frontend performance, accessibility, security and CI/CD improvements.
• Guide distributed engineering teams and collaborate with architects, UX designers and stakeholders.

Skills

Frontend engineering

React

Next.js

UI architecture

Leadership

Tools

AEM (Adobe Experience Manager)

GraphQL

REST APIs

Claude AI

AWS

CI/CD

Git

Automated testing

Design systems

Job description

We are seeking a highly experienced UI Lead Frontend Engineer with 10+ years of experience in frontend development, enterprise UI architecture and technical leadership.

• 10+ years of frontend/UI engineering experience.
• Strong hands-on experience with Adobe Experience Manager (AEM Sites), Core Components, editable templates and client libraries.
• Experience integrating frontend applications with AEM Headless, GraphQL and REST APIs.
• Proven expertise in frontend architecture, reusable components, design systems and performance optimisation.
• Hands-on experience with Claude AI / Claude Code for software development.
• Good understanding of AWS, CI/CD pipelines, Git and automated testing.
• Strong technical leadership, stakeholder communication and team mentoring skills.

Key Responsibilities

• Lead frontend architecture, technical design and development.
• Build scalable React/Next.js applications integrated with AEM.
• Establish reusable UI components, coding standards and engineering best practices.
• Leverage Claude AI to improve development productivity and code quality.
• Drive frontend performance, accessibility, security and CI/CD improvements.
• Guide distributed engineering teams and collaborate with architects, UX designers and stakeholders.

Ideal Candidate: A hands-on UI engineering leader with deep React/Next.js expertise, strong AEM architecture and integration experience, AWS knowledge and practical experience with Claude AI.