Principal Software Engineer - Customer Platforms
- Team
- Digital & Tech
- Store
- London Support Office
- Location
- London, Greater London
- Contract type
- Permanent
- Position type
- Full Time
- Salary
- Competitive + Benefits
- Closing date: 31st July 2026
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.
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.
Job purpose
As part of the M&S Software Engineering team, you’ll be joining a well-loved historic brand, working on solutions that serves millions of loyal customers and thousands of colleagues! With ethical values that run right through the company’s core and technology leaders that truly understand software engineers and 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 are seeking a passionate Principal Software Engineer to join us working across our Customer Platform team at M&S, where you will be a driving force behind the modernisation of mission-critical systems for M&S, as we scale. As a technical leader, you will be collaborating with multiple cross-functional teams to design, build, and maintain the software that powers our warehouse operations.
Reports to
Senior Head of Software Engineering
What You'll Do:
Who You Are:
Desirable experience
Tech Stack
M&S uses a variety of technologies including;
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:
#LI-Hybrid #LI-PJ1
We're at our best when we're close to customers, and for many of us at M&S, that means working in store every day.
To stay close to customers, our support teams are in the office three days a week as we believe that skills are developed through collaboration, and that spending time together makes us more creative and connected. It also means we can solve problems as soon as they arise, learn and grow as a team, build trust, and get closer to our colleagues.
Take part in our M&S Digital & Tech team days. Grow your digital and data skills through our BEAM Academy. Or challenge yourself at one of our business-wide hackathons. We also partner with Women in Data, Databricks and Cajigo to increase opportunities for women in digital and data.
Your voice and your ideas matter here. Our 8 colleague networks are places to find support, listen to each other and encourage debate. You can pitch ideas ‘Straight to Stuart’, our CEO, or get involved in our BIG (Business involvement Group).
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.
Fill in our short application form and hit submit.
Depending on the role you are applying for, you may be invited to do an assessment. Your Talent Acquisition Partner will guide and inform you along the way.
We'll invite you to join us for an interview. This could be remote or in person. Here, we'll ask you some role based technical questions and examine the behaviours we're looking for.
After we’ve made our decision, 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.