Full Stack Developer (Principal / Senior)

Hays are now looking for a Full Stack Developer for one of our local retail clients:

• Flexible Rate - Inside IR35
• 3 days a week onsite
• Location is Bury

We''re supporting a leading global footwear retailer as they build Marketplace and Conversion Optimisation squads to deliver improvements across their digital commerce platforms. We''re looking for hands-on engineers who combine strong full stack technical expertise with product thinking, software craftsmanship and a passion for building customer-facing solutions.

What you''ll be doing

• Design, build and deploy scalable cloud-native applications across marketplace and ecommerce platforms
• Develop customer-facing features that improve conversion, customer experience and commercial outcomes
• Take features from discovery through to production
• Lead technical delivery through hands-on engineering and coding
• Build and maintain REST APIs, microservices and modern web applications
• Drive code quality, software craftsmanship and engineering best practices
• Mentor engineers through pairing, code reviews and day-to-day delivery
• Embed automated testing, security and quality throughout the development lifecycle
• Improve CI/CD pipelines, deployment processes and developer experience
• Design scalable, maintainable solutions and reduce technical debt
• Drive automation and continuous improvement across engineering teams
• Utilise AI-assisted engineering tools to improve productivity, code quality and troubleshooting

What we''re looking for

• Strong commercial full stack software engineering experience
• React and/or Next.js experience
• Node.js and TypeScript experience
• AWS cloud-native development experience
• REST APIs and microservices architecture
• CI/CD and modern software delivery practices
• Automated testing experience
• Experience delivering cloud-native digital products within Agile teams
• Strong understanding of modern engineering, DevOps and software development best practices
• Experience mentoring and supporting other engineers through hands-on delivery
• Ability to balance rapid delivery with long-term engineering quality

Nice to have

• CommerceTools or similar composable commerce platforms
• Terraform or Infrastructure as Code
• GitHub Actions
• Docker and Kubernetes
• Event-driven architecture
• Monorepo environments
• Observability platforms
• Feature flag frameworks
• AI development tools such as GitHub Copilot, Cursor, Claude Code or Gemini Code Assist

If you are able to commute to Manchester/Bury 3 times a week and are interested in this role, click ''apply now'' to forward an up-to-date copy of your CV, or send a copy of your CV to

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