Principal Software Engineer - HR

Marks and Spencer; Greater London; Hybrid; GBP 110,000 - 150,000; Full time

Benefits offered by this job

20% colleague discount on all M&S

Competitive holiday allowance

Discretionary bonus schemes

Strong pension and life assurance

Tailored induction and training

Exclusive perks and savings

Market-leading family policies

24/7 wellbeing support

One paid volunteer day

Job summary

Marks & Spencer is seeking a Principal Engineer, the most senior individual contributor in engineering, to set technical direction and lead architectural decisions aligned with business strategy. You will mentor teams and drive secure, resilient, maintainable solutions across the Azure-based microservices and integration estate.

In this role you will partner with HR, Payroll and Product stakeholders to balance technology investments with people processes, whilst guiding API design, data flows

Qualifications

• 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.

Responsibilities

• 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.

Skills

System design

Technical leadership

Azure

APIs & Integration

Security & resilience

Observability

People & Labour domain knowledge

Tools

Azure

Oracle HCM

Blue Yonder Workforce Management

CI/CD tooling

Job description

All the details

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.

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