Senior Software Engineer – Lead Scalable Kotlin Systems

MARKS&SPENCER; Greater London; Hybrid; GBP 85,000 - 110,000; Full time

Benefits offered by this job

20% colleague discount

Discretionary bonus schemes

Strong pension and life assurance

Wellbeing support

Induction and training

Job summary

Marks & Spencer is seeking a Senior Software Engineer to join the Software Engineering team in a hybrid UK role. You will design, build, release and maintain scalable software, providing technical leadership on complex initiatives and shaping solutions that deliver value across the business.

You will work on modern backend-focused systems using Kotlin, GraphQL/REST, and MVVM architectures, collaborating with stakeholders and driving engineering excellence across pipelines and deployments.

Qualifications

• Strong backend experience and software engineering best practices.
• Understanding of MVC, SOLID, DRY and KISS principles.
• Proficiency with Git and distributed version control.
• Experience with TDD/BDD and non-functional testing approaches.
• DevOps mindset with "you build it, you run it" approach.

Responsibilities

• Write, test and debug code for complex features and migrations, optimise deployment pipelines.
• Provide technical leadership and estimation on high-impact projects.
• Contribute to architectural decisions aligning with long-term tech strategy.
• Review code and provide constructive feedback for maintainability and quality.
• Collaborate with stakeholders including senior leaders and external partners.

Skills

Backend focus

Software engineering best practices

Git

TDD/BDD

DevOps

Tools

Kotlin

Jetpack Compose

Gradle

RESTful APIs

GraphQL

GitHub Actions

Figma

MDM

Job description

Marks & Spencer is seeking a Senior Software Engineer to join the Software Engineering team in a hybrid UK role. You will design, build, release and maintain scalable software, providing technical leadership on complex initiatives and shaping solutions that deliver value across the business.

You will work on modern backend-focused systems using Kotlin, GraphQL/REST, and MVVM architectures, collaborating with stakeholders and driving engineering excellence across pipelines and deployments.