Senior Software Engineer - Web Platform
Operating across Food, Clothing & Home and other retail areas using the M&S own-brand model, we are a leading retailer with a unique heritage of brand values, extraordinary colleagues and customers.
Team
Supply Chain & Logistics
Store
London Support Office
Location
London, Greater London
Contract type
Permanent
Position type
Full Time
Salary
Competitive + Benefits
Closing date: 1st July 2026
Intro
About the role
Meet the Team
Our Support
People Stories
Benefits
Colleague Networks
How to Apply
How We Hire
Everyone is welcome at M&S. No exceptions. It’s your background, abilities and differences that make you, uniquely you. And when you’re part of M&S, that individuality has the potential to make waves.
About the role
This section tells you all you need to know about the position and its responsibilities, outlining everything we hope to see in a successful candidate.
Summary
As part of the M&S Software Engineering team, you'll be joining a well-loved historic brand, working on solutions that serve millions of loyal customers and thousands of colleagues. With ethical values that run right through the company's core, and technology leaders that genuinely understand software engineering, it's an exciting time as we're redefining ourselves into a digital-first and engineering-led organisation, with the quality of our engineering team being a key differentiator.
We're looking for a Senior Software Engineer who enjoys building the things other engineers rely on. On Web Platform, your users are not shoppers, they're the engineers building web applications across M&S. Your job is to make them faster, safer, and more effective through better tooling, cleaner defaults, stronger pipelines, sharper standards, and less day-to-day friction.
The Web Platform is a set of opinionated, productised tools and workflows used by every team building web apps at M&S. We focus on
All the details
As part of the M&S Software Engineering team, you'll be joining a well-loved historic brand, working on solutions that serve millions of loyal customers and thousands of colleagues. With ethical values that run right through the company's core, and technology leaders that genuinely understand software engineering, it's an exciting time as we're redefining ourselves into a digital-first and engineering-led organisation, with the quality of our engineering team being a key differentiator.We're looking for a Senior Software Engineer who enjoys building the things other engineers rely on. On Web Platform, your users are not shoppers, they're the engineers building web applications across M&S. Your job is to make them faster, safer, and more effective through better tooling, cleaner defaults, stronger pipelines, sharper standards, and less day-to-day friction.The Web Platform is a set of opinionated, productised tools and workflows used by every team building web apps at M&S. We focus on developer productivity, quality, and lead time to change, making sure the engineering environment is something people can trust and actually enjoy using. What You'll Do
Build, evolve, and maintain Web Platform capabilities that engineers across M&S depend on every day, including shared libraries, tooling, pipelines, testing patterns, and documentation
Take end-to-end ownership of meaningful platform work, from understanding the problem through design, delivery, rollout, and operational follow-through
Contribute to the technical direction of the team, helping shape standards and solutions that balance developer experience, quality, reliability, and maintainability
Write clean, maintainable, well-tested code, and raise the bar through code review, pairing, and thoughtful technical feedback
Work closely with engineering teams across M&S to understand pain points, reduce toil, and improve the day-to-day experience of building and shipping web software
Improve pipeline speed and reliability, test confidence, and the overall health of a busy monorepo environment
Participate in support and operational responsibilities, with a production-first mindset around observability, incident response, and service reliability
Mentor other engineers through coaching, pairing, and example, helping the team grow stronger without needing formal line management
Who You Are
Strong production experience with modern web engineering, particularly React, Next.js, and TypeScript
Comfortable working on engineer-facing platform problems, not just product features
Hands-on with CI/CD, automated testing, and operating what you build
Familiar with monorepo and build tooling concerns such as dependency management, library boundaries, caching, and merge reliability
Able to own ambiguous technical problems and drive them through to a sensible outcome without needing constant direction
Experienced in working across team boundaries, influencing through clarity and credibility rather than authority
Pragmatic, collaborative, and comfortable in a high-autonomy engineering environment
Interested in developer productivity, and ideally familiar with frameworks such as DORA and SPACE
Tech Stack
You'll need strong hands-on experience with most of the following:
React, Next.js, TypeScript
NX monorepo tooling
GitHub Actions and CI/CD pipelines
Playwright and Jest
Azure Cloud
Observability tooling such as Dynatrace
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-JE1
Meet the Team
Our Support
Mentorship
It’s important to us that our new colleagues feel supported in their roles and can learn from others. That’s why we offer mentorship through our buddy system.
Wellbeing
Get access to resources to keep you fit and healthy, in body and mind. This includes access to our Wellbeing Hub, Virtual GP, Check4Cancer, PAM Assist and I&D Networks.
Imy
Lucy
Imy
Lucy
Imy
Lucy
M&S gives you the freedom to be yourself. If you are genuinely motivated by a challenge, there’s nothing to stop you or hold you back. I would pass on the same advice I was given. Seize the opportunities. Share your ideas. Try things out. If it works, great. If it doesn’t, learn from it. This is the way we move forward as people – and as a business.
Imy (He / Him) | Shift Manager Read full story
M&S really has an appetite for change: there is a real belief in where we’re heading, and the business is putting the investment and infrastructure behind it. We’re always looking at where the industry is now, and identifying opportunities to evolve and improve the efficiency of our logistics network.
Lucy (She / Her) | Programme Manager Read full story
M&S gives you the freedom to be yourself. If you are genuinely motivated by a challenge, there’s nothing to stop you or hold you back. I would pass on the same advice I was given. Seize the opportunities. Share your ideas. Try things out. If it works, great. If it doesn’t, learn from it. This is the way we move forward as people – and as a business.
Imy (He / Him) | Shift Manager Read full story
M&S really has an appetite for change: there is a real belief in where we’re heading, and the business is putting the investment and infrastructure behind it. We’re always looking at where the industry is now, and identifying opportunities to evolve and improve the efficiency of our logistics network.
Lucy (She / Her) | Programme Manager Read full story
M&S gives you the freedom to be yourself. If you are genuinely motivated by a challenge, there’s nothing to stop you or hold you back. I would pass on the same advice I was given. Seize the opportunities. Share your ideas. Try things out. If it works, great. If it doesn’t, learn from it. This is the way we move forward as people – and as a business.
Imy (He / Him) | Shift Manager Read full story
M&S really has an appetite for change: there is a real belief in where we’re heading, and the business is putting the investment and infrastructure behind it. We’re always looking at where the industry is now, and identifying opportunities to evolve and improve the efficiency of our logistics network.
Lucy (She / Her) | Programme Manager Read full story
End of quote slider carousel
Benefits
Wellbeing hub
Get access to resources to support your wellbeing, including a free virtual GP service.
Giving back
Support your favourite charities by donating through your pay or even volunteering for them.
Pay
Earn a competitive salary.
Colleague discount
After completing your probation period, you'll receive 20% colleague discount across all M&S products and many of our third-party brands for you and a member of your household.
Please note only contracts of more than 12 weeks are eligible for this benefit.
Time off
Competitive holiday entitlement with the potential to buy extra holiday days.
Bonus
We have discretionary bonus schemes depending on your role and our business performance.
Life assurance
Get cover for twice your salary up to age 70 (double with our Pension Plan).
Workplace savings
We’ll help you save through our Pension Savings Plan, Share Buy and Sharesave schemes.
My Choices
Save on everyday costs through discounts and offers and get access to great health benefits.
Cycle to work
Bike/accessory hire with Cycle to Work and save on tax and national insurance.
Smart tech
Buy the latest technology with interest-free financing directly from your salary.
Family friendly policy
Industry-leading maternity, paternity, adoption and neo-natal policies, providing support and flexibility for you and your family.
Wellbeing hub
Wellbeing hub
Get access to resources to support your wellbeing, including a free virtual GP service.
Giving back
Giving back
Support your favourite charities by donating through your pay or even volunteering for them.
Pay
Pay
Earn a competitive salary.
Colleague discount
Colleague discount
After completing your probation period, you'll receive 20% colleague discount across all M&S products and many of our third-party brands for you and a member of your household.
Please note only contracts of more than 12 weeks are eligible for this benefit.
Time off
Time off
Competitive holiday entitlement with the potential to buy extra holiday days.
Bonus
Bonus
We have discretionary bonus schemes depending on your role and our business performance.
Life assurance
Life assurance
Get cover for twice your salary up to age 70 (double with our Pension Plan).
Workplace savings
Workplace savings
We’ll help you save through our Pension Savings Plan, Share Buy and Sharesave schemes.
My Choices
My Choices
Save on everyday costs through discounts and offers and get access to great health benefits.
Cycle to work
Cycle to work
Bike/accessory hire with Cycle to Work and save on tax and national insurance.
Smart tech
Smart tech
Buy the latest technology with interest-free financing directly from your salary.
Family friendly policy
Family friendly policy
Industry-leading maternity, paternity, adoption and neo-natal policies, providing support and flexibility for you and your family.
Wellbeing hub
Giving back
Pay
Colleague discount
Time off
Bonus
Life assurance
Workplace savings
My Choices
Cycle to work
Smart tech
Family friendly policy
Colleague Networks
We want you to feel supported, no matter what.
Menopause Network
Initiating and encouraging open conversations about menopause by offering support and sharing experiences.
Forces Community Network
Supporting colleagues connected to the Armed Forces, aiding their transition to civilian life, and ensuring that they thrive in the workplace.
LGBTQ+ Network
Proactively representing LGBTQ+ issues and opportunities to deliver a truly inclusive place to work and shop for our colleagues and customers.
Family & Carers Network
A support network for parents and carers, offering a space for colleagues to share experiences, exchange ideas, and access useful resources.
Gender Equality Network
Addressing gender-related challenges, raising awareness, and driving action to ensure equal opportunities for all.
Health and Wellbeing Network
Providing a safe space for colleagues with all types of health conditions or disabilities and supporting with business initiatives to ensure our stores are truly accessible for our customers.
Culture and Heritage Network
Raising awareness of various religions and cultures through events and comms, to educate others and better represent our M&S colleagues and customers.
Cancer Network
Fostering a supportive and inclusive workplace culture, addressing stigma, providing guidance and raising awareness to empower and assist colleagues affected by cancer.
Menopause Network
Initiating and encouraging open conversations about menopause by offering support and sharing experiences.
Forces Community Network
Supporting colleagues connected to the Armed Forces, aiding their transition to civilian life, and ensuring that they thrive in the workplace.
LGBTQ+ Network
Proactively representing LGBTQ+ issues and opportunities to deliver a truly inclusive place to work and shop for our colleagues and customers.
Family & Carers Network
A support network for parents and carers, offering a space for colleagues to share experiences, exchange ideas, and access useful resources.
Gender Equality Network
Addressing gender-related challenges, raising awareness, and driving action to ensure equal opportunities for all.
Health and Wellbeing Network
Providing a safe space for colleagues with all types of health conditions or disabilities and supporting with business initiatives to ensure our stores are truly accessible for our customers.
Culture and Heritage Network
Raising awareness of various religions and cultures through events and comms, to educate others and better represent our M&S colleagues and customers.
Cancer Network
Fostering a supportive and inclusive workplace culture, addressing stigma, providing guidance and raising awareness to empower and assist colleagues affected by cancer.
Menopause Network
Initiating and encouraging open conversations about menopause by offering support and sharing experiences.
Forces Community Network
Supporting colleagues connected to the Armed Forces, aiding their transition to civilian life, and ensuring that they thrive in the workplace.
LGBTQ+ Network
Proactively representing LGBTQ+ issues and opportunities to deliver a truly inclusive place to work and shop for our colleagues and customers.
Family & Carers Network
A support network for parents and carers, offering a space for colleagues to share experiences, exchange ideas, and access useful resources.
Gender Equality Network
Addressing gender-related challenges, raising awareness, and driving action to ensure equal opportunities for all.
Health and Wellbeing Network
Providing a safe space for colleagues with all types of health conditions or disabilities and supporting with business initiatives to ensure our stores are truly accessible for our customers.
Culture and Heritage Network
Raising awareness of various religions and cultures through events and comms, to educate others and better represent our M&S colleagues and customers.
Cancer Network
Fostering a supportive and inclusive workplace culture, addressing stigma, providing guidance and raising awareness to empower and assist colleagues affected by cancer.
End of slider Colleague Networks carousel
How to Apply
Here’s what to expect at each stage of the application process. This can change depending on the role you’ve applied to. If you need any reasonable adjustments made at any stage, let us know and we can help.
Send us your application
Fill in our short application form and hit submit.
Online assessment
We’ll invite you to take part in an online assessment that includes a product checking test and a situational judgement test. This could be before or after your interview.
Interview
We'll invite you to join us for an On Demand video interview. Here, we'll ask you some technical questions based on the behavioural attributes we're looking for.
Decision
After we’ve decided, we’ll be in touch. If you’ve been successful, we’ll officially invite you to join the team and let you know the next steps.