https://jobs.co.uk/job/full-stack-developer-principal-senior-hays-technology--0d4c982e-b2e6-43d0-b9de-c78d508e5595 RSS feed for Full Stack Developer (Principal / Senior) at Hays Technology. en-gb Thu, 09 Jul 2026 23:02:06 GMT https://jobs.co.uk/job/full-stack-developer-principal-senior-hays-technology--0d4c982e-b2e6-43d0-b9de-c78d508e5595 https://jobs.co.uk/job/full-stack-developer-principal-senior-hays-technology--0d4c982e-b2e6-43d0-b9de-c78d508e5595 Wed, 08 Jul 2026 23:00:00 GMT Location: Bury | Salary: Negotiable | Type: Contract | 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... Contract