Senior Frontend Engineer Shirebrook (Hybrid – 3 days onsite) Full-time We’re partnering with a leading UK retail and digital platform business undergoing significant transformation, building out a modern, scalable engineering ecosystem across multiple brands and platforms. They’re looking for a Senior Frontend Engineer to join a product-aligned, agile engineering team, playing a key role in shaping customer-facing experiences at scale. This is a senior individual contributor position with real ownership, influence, and the opportunity to impact technical direction across a large, complex digital estate. The Role You’ll be working on a modern MACH-based architecture (Microservices, API-first, Cloud-native, Headless), helping deliver and evolve platforms that support 70 websites and mobile applications. Alongside delivery, you’ll act as a technical leader within the frontend community, mentoring engineers and driving best practices across teams. What You’ll Be Doing • Driving frontend architecture decisions (component design, state management, app structure) • Building high-quality solutions using React, Next.js and TypeScript • Influencing shared design systems and frontend standards • Partnering closely with Product, Design and Content teams • Owning critical customer journeys with a focus on performance, accessibility and usability • Working with GraphQL and REST APIs, with some Node.js exposure • Mentoring engineers and elevating overall engineering standards • Identifying improvements across performance, CI/CD and developer experience What They’re Looking For • Strong experience as a Senior Frontend or Full-Stack Engineer in production environments • Deep expertise in JavaScript, TypeScript, React and Next.js • Experience mentoring and supporting engineers • Strong understanding of performance, accessibility (WCAG) and responsive design • Experience across the full SDLC including testing, CI/CD and automation Nice to have: • Experience with MACH/composable architecture • Knowledge of Core Web Vitals • Exposure to cloud platforms (Azure etc.) and Infrastructure as Code • Experience in distributed or event-driven systems Why Join? This is an opportunity to join a high-growth, tech-driven environment where engineering plays a central role in shaping the future of a major digital platform. You’ll have real ownership, autonomy, and the chance to influence how things are built at scale.