Senior Software Engineer - Order Management Systems

We’re looking for a Senior Software Engineer to play a pivotal role in evolving M&S’s Order Management platform. This team provides the critical software capabilities that power order fulfilment across the business, ensuring customers receive a seamless experience from checkout through to delivery, amendments, cancellations, and returns. Your “customers” are product teams, engineers, fulfilment stakeholders, and ultimately millions of M&S customers — and your mission is to make them faster, more effective, and more confident through scalable systems, resilient integrations, and exceptional engineering practices. This is a role for an engineer who is excited by solving complex fulfilment challenges, modernising enterprise systems, and building reliable software that supports one of the UK's largest retail operations. Your responsibilities Your key accountabilities will include: Design, build, and evolve order management capabilities that support seamless customer fulfilment journeys across checkout, fulfilment, returns, amendments, and cancellations.Own features end-to-end, taking responsibility for solution design, development, testing, deployment, and production support.Help shape the technical direction of the Order Management platform, driving improvements in architecture, integration patterns, automation, reliability, and security.Drive operational excellence by designing systems with observability, monitoring, resilience, and supportability at their core.Use tools such as Dynatrace to improve platform visibility, monitoring, and alerting capabilities.Collaborate closely with Product Managers, Engineering teams, and Fulfilment stakeholders to solve complex business challenges and accelerate delivery outcomes. Required skills A senior software engineer with deep backend engineering experience and a proven track record of delivering reliable, scalable systems in complex enterprise environments.Strong Knowledge with IBM Sterling Order Management and the challenges associated with large-scale ecommerce fulfilment operations.Strong Java engineer with experience designing and developing enterprise services, APIs, and integrations across distributed systems.Experienced in CI/CD practices, observability, production support, and operational excellence.Comfortable designing systems with resilience, recoverability, monitoring, and supportability in mind.A collaborative engineer who enjoys working across disciplines, raising standards, and helping teams continuously improve. What we offer Being a part of M&S is exactly that – playing your part to bring the magic of M&S to our customers every day. We’re an inclusive, dynamic, exciting, and ever-evolving business built on doing the right thing and bringing exceptional quality, value, service to every customer, whenever, wherever, and however they want to shop with us. Here are some of the benefits we offer that make working for M&S just that little bit more special… 20% colleague discount across M&S products and selected third-party brands.Competitive holiday entitlement with the potential to buy extra holiday days.Discretionary bonus schemes awarded based on personal and business performance.A generous Defined Contribution Pension Scheme and Life Assurance.A tailored induction and extensive learning and development opportunities.Amazing perks and discounts via the M&S Choices platform.Access to GymSave and the opportunity to become an M&S Shareholder.A dedicated charity volunteer day to support a cause you're passionate about.Access to a fantastic range of wellbeing support, including a 24/7 Virtual GP and wellbeing services. Everyone’s Welcome! We are ambitious about the future of retail. We’re disrupting, innovating, and leading the industry into a more conscientious, inspiring digital era. We’re transforming how we work together and offering our most exciting opportunities yet. Ready to take the next step in your career? Apply today and join our team!