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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