Senior Next.js Engineer - 12 months | Coventry/London, UK (Hybrid - 1-2 days/week in office)

We're recruiting for a Senior Next.js Engineer to strengthen engineering capability in support of strategic digital transformation initiatives and business-critical web application projects for a leading UK retail organisation. You'll design and build modern, high-performance web applications using Next.js App Router, React Server Components (RSC), and Server Actions, delivering scalable solutions across complex business workflows - with strong focus on full-stack development, performance optimisation, and observability.

Key Responsibilities:

• Design and build robust web applications using Next.js App Router, React Server Components (RSC), and Server Actions
• Develop and maintain scalable Back End APIs to support complex business workflows
• Design and implement MongoDB data models and database schemas
• Build efficient Server Side logic and integrations across the full application stack
• Apply clean code practices and SOLID design principles to deliver maintainable, extensible solutions
• Implement and optimise data-fetching strategies including SSR, SSG, and ISR
• Develop and maintain advanced caching mechanisms to improve scalability and performance

What You Will Ideally Bring:

• Strong hands-on experience with Next.js App Router, React Server Components (RSC), and Server Actions
• Proficiency in React, TypeScript, JavaScript (ES6+), component-based architecture, and modern Front End practices
• Experience developing scalable Back End APIs, Server Side logic, and end-to-end application functionality
• Strong knowledge of MongoDB, data modelling, schema design, and database integration patterns
• Solid understanding of clean code practices, SOLID principles, and maintainable application architecture
• Experience implementing SSR, SSG, ISR, caching strategies, and asset optimisation for strong Core Web Vitals
• Hands-on experience with New Relic for application monitoring, distributed tracing, logging, and metrics collection

Contract Details:

• Duration: 12 months (with potential extension)
• Day Rate: £550 per day
• Location: London or Coventry
• Start Date: ASAP