The Principal Engineer is the most senior individual contributor in engineering, setting technical direction, leading architectural decisions and aligning technology investment with business strategy. They combine deep technical expertise with mentorship and broad organisational influence to enable secure, resilient and maintainable solutions.
Aligned to the People & Labour sub-domains, this role leads the modernisation of the Azure microservices and integration estate supporting colleague, HR and workforce management capabilities. The ecosystem includes SaaS platforms such as Oracle HCM and Blue Yonder Workforce Management, along with Azure services that integrate with external providers. The successful candidate will combine strong engineering judgement with an understanding of people, HR and labour processes.
Due to high interest, this role may close earlier than advertised. We recommend applying as soon as possible.
What you'll do
Your key accountabilities will include:
• Own the technical strategy and roadmap for the People & Labour sub-domains, with a particular focus on modernising Azure microservices, integrations and data flows.
• Lead system design and architecture across teams, products and enterprise platforms, guiding decisions on APIs, event-driven architecture, SaaS integration and build-versus-buy approaches.
• Mentor engineering managers, staff engineers and key engineering talent, fostering technical excellence, continuous improvement and high hiring standards.
• Partner with HR, Payroll, Workforce Management, Product, Architecture, Security and Data stakeholders to align technology and business objectives and communicate technical trade-offs effectively.
• Drive operational excellence through improved observability, resilience, incident management, CI/CD, developer experience and the adoption of AI across the product and software development lifecycle.
Who you are
Your skills and experience will include:
• Extensive experience in system design, architecture and technical leadership across complex, business-critical domains.
• Proven experience modernising Azure-based distributed or microservices architectures.
• Strong knowledge of APIs, asynchronous messaging, SaaS integration, observability, security, resilience and continuous delivery.
• Understanding of People and Labour domains, including areas such as core HR, colleague lifecycle, payroll, absence, time and attendance, labour forecasting or workforce scheduling.
• Strong mentoring, influencing and stakeholder management skills, with experience handling sensitive colleague and workforce data.
Tech stack
Experience with technologies and platforms including:
• Microsoft Azure
• Azure Microservices Architecture
• APIs and Integration Services
• Event-Driven Architecture and Asynchronous Messaging
• CI/CD and Modern Engineering Tooling
• Observability, Monitoring and Resilience Tooling
• Oracle HCM / MyHR
• Blue Yonder Workforce Management
What’s in it for you?
Working at M&S means being part of something bigger - helping to deliver quality, value and service to millions of customers every day. We’re inclusive, fast-moving and always evolving, with a strong sense of purpose and a focus on doing the right thing.
Here are just a few of the benefits that make working here even more rewarding:
• 20% colleague discount on all M&S products and many third-party brands for you and someone in your household, available once you’ve completed your probation
• Competitive holiday allowance with the option to buy more
• Discretionary bonus schemes linked to your performance and ours
• Strong pension and life assurance to help plan for the future
• Tailored induction and training to support your development from day one
• Exclusive perks and savings through our M&S Choices portal
• Market-leading family policies, including parental, adoption and neonatal leave
• 24/7 wellbeing support, including virtual GP access and mental health services
• One paid volunteer day a year to support a cause that matters to you
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. Marks & Spencer strives to be an inclusive organisation, trusted and admired by our colleagues, customers and suppliers. Join us and make change happen.
We are committed to building diverse and representative teams, where everyone can bring their whole selves to work and be at their best. We support each other and work together to win together.
If you feel you'd benefit from any support or reasonable adjustments during any stage of the recruitment process, please don’t hesitate to let us know when completing your application. This information will be picked up by our team, so we can try and put steps in place to help you be at your best through this process.
#LI-Hybrid #LI-DB2
Skills Required
- Extensive experience in system design, architecture, and technical leadership across complex, business-critical domains
- Proven experience modernizing Azure-based distributed or microservices architectures
- Strong knowledge of APIs, asynchronous messaging, SaaS integration, observability, security, resilience, and continuous delivery
- Understanding of People and Labour domains, including core HR, colleague lifecycle, payroll, absence, time and attendance, labour forecasting, or workforce scheduling
- Strong mentoring, influencing, and stakeholder management skills
- Experience handling sensitive colleague and workforce data
- Experience with Microsoft Azure, Azure microservices architecture, APIs and integration services, event-driven architecture, asynchronous messaging, CI/CD, modern engineering tooling, observability, monitoring, resilience tooling, Oracle HCM or MyHR, and Blue Yonder Workforce Management
What We Do
At M&S, we're dedicated to being the most trusted retailer, prioritising quality and delivering value. Every day, we bring the magic of M&S to our customers, whenever, wherever and however they want to shop with us. For over a century, we've set the standard, doing the right thing and embracing innovation. Today, with over 65,000 colleagues serving 32 million customers globally, we're putting quality products at the heart of everything we do. Tomorrow holds boundless opportunities with us. We're pioneering digital innovation and shaping the future of retail where our values drive every action. We stay close to customers and colleagues, always curious and connected. Our decisions are bold, our actions ambitious. Transparency is paramount, with straightforward, honest communication. We're constantly innovating, always striving for the best. Our focus is on aiming higher and winning together, combined with wise financial decisions to secure our future. Join us at M&S to shape the future of retail.
