Senior Identity Platform Engineer – Scale Secure Auth

M&S; Greater London; On-site; GBP 60,000 - 80,000; Full time

Job summary

A leading retail company in Greater London is seeking a Senior Software Engineer to join their Identity team. The role involves building and scaling authentication experiences for millions of users, collaborating with cross-functional teams, and driving the technical direction of their Identity Platform. Ideal candidates have experience with JVM languages, cloud environments, and DevOps practices. They offer competitive benefits, a supportive work culture, and opportunities for professional growth.

Benefits

20% colleague discount on M&S products

Competitive holiday allowance

Discretionary bonus schemes

Strong pension and life assurance

Exclusive perks and savings

24/7 wellbeing support

Paid volunteer day annually

Qualifications

• Experience building and scaling distributed systems, ideally serving millions of users.
• Good knowledge in one or more JVM-based languages (ideally Kotlin with Micronaut).
• Proven experience in DevOps practices, including running and operating what you build.

Responsibilities

• Build and evolve secure, scalable, and high-performance authentication experiences.
• Contribute to the technical direction of the Identity Platform.
• Write clean, maintainable, well-tested code and champion engineering best practices.

Skills

Building and scaling distributed systems

Proficiency in JVM languages (Kotlin preferred)

DevOps practices

CI/CD pipeline design

Cloud environments (Azure preferred)

Identity standards knowledge (OAuth 2.0, OpenID Connect)

Tools

Java

Spring/SpringBOOT

Micronaut

React

Azure Cloud

Kubernetes

SQL Server

MongoDB

Job description

A leading retail company in Greater London is seeking a Senior Software Engineer to join their Identity team. The role involves building and scaling authentication experiences for millions of users, collaborating with cross-functional teams, and driving the technical direction of their Identity Platform. Ideal candidates have experience with JVM languages, cloud environments, and DevOps practices. They offer competitive benefits, a supportive work culture, and opportunities for professional growth.