Senior Engineer - Identity

The M&S Identity team is looking for a Senior Software Engineer to join our dynamic team. You will provide technical expertise, ship thoughtful solutions, and operate with excellence. Creative, curious, and fearless, you will be an integral part of our empowered, self-managing domain engineering team, pushing the boundaries of our Identity Platform.

The team is responsible for the M&S Identity Platform, managing authentication journeys for both customers and colleagues. We sit at a unique intersection, delivering seamless authentication experiences for customers while enabling internal teams to build on a robust Identity Platform.

In this role, you will play a key part in driving our ambition to create a best-in-class software engineering team, environment, and culture. Join our community of engineers to help build a modern digital ecosystem, work with cutting-edge technologies, and do the best work of your career.

What\’s in it for you

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…

• After completing your probationary 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.
• Competitive holiday entitlement with the potential to buy extra holiday days!
• Discretionary bonus schemes awarded based on how you achieve your personal objectives and our performance as a business.
• A generous Defined Contribution Pension Scheme and Life Assurance.
• A dedicated welcome to our teams with a tailored induction and a wide range of training programmes to develop your skills.
• Amazing perks and discounts via our M&S Choices portal to maximise your financial and personal wellbeing.
• Industry-leading parental, adoption and neonatal policies, providing support and flexibility for your family.
• Access to a fantastic range of wellbeing support for all colleagues including access to our 24/7 Virtual GP and PAM Assist to support you and your family.
• A charity volunteer day to support a charity or cause you\’re passionate about through a dedicated day away from work.

What you\’ll do

Your key accountabilities will include:

• Build and evolve secure, scalable, and high-performance authentication experiences for millions of M&S customers and colleagues
• Take end-to-end ownership of features – from design and development through testing, deployment, and monitoring in production
• Contribute to the technical direction of the Identity Platform and help shape solutions that balance customer experience, security, and developer usability
• Write clean, maintainable, well-tested code, and champion engineering best practices in your team
• Take shared responsibility for the operational excellence of the Identity Platform, including participating in our 24-hour support rota
• Collaborate closely with Product Managers, Designers, and Engineers to solve real user problems in thoughtful and innovative ways
• Actively participate in code reviews, pair programming, technical discussions and creating high quality documentation to share knowledge and continuously improve as a team
• Mentor and support more junior engineers through coaching and feedback

Who you are

Your skills and experience will include:

• 5+ years of experience building and scaling distributed systems, ideally serving millions of users
• Good knowledge in one or more JVM-based languages (MUST HAVE Kotlin with Micronaut)
• Proven experience in DevOps practices, including running and operating what you build
• Experience designing CI/CD pipelines and driving improvements in developer productivity
• Comfortable working in cloud environments (preferably Azure)
• Experience with identity standards like OAuth 2.0 and OpenID Connect is a strong plus
• You balance long-term thinking with pragmatic delivery, and thrive in high-autonomy teams

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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