Senior Software Engineer – Payment Capabilities

MS Companies

Senior Software Engineer developing payment services and systems for M&S’s digital platforms. Designing resilient backend services that support millions of customer transactions securely and efficiently.

Posted 7/23/2026full-timeLondon • 🇬🇧 United KingdomSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing and delivering scalable, resilient backend systems and APIs, with a strong focus on software quality, testing, and maintainability. Proficient in driving operational excellence through observability and modern engineering practices.

Highest-signal resume keywords

Java Engineering ExpertiseBackend Service DevelopmentAPI Design and IntegrationCI/CD ImplementationObservability and Monitoring

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Backend DevelopmentAPI DevelopmentSystem DesignScalable SystemsResilient SystemsEnterprise ServicesTesting and MaintainabilityPerformance OptimizationSecurity Best PracticesDistributed Systems

Soft Skills

Problem-SolvingCollaborationPassion for Quality

Tools & Technologies

Dynatrace

Industry Keywords

Ecommerce PlatformsPayment ServicesTransactional SystemsOperational Excellence

Tech Stack

Tools & technologies

Distributed SystemsJava

About the role

Key responsibilities & impact

Design, build, and evolve payment services and capabilities that enable seamless customer transactions across M&S digital platforms.
Develop resilient backend services, APIs, and integrations that support millions of customer payment journeys every year.
Own features end-to-end, taking responsibility for solution design, development, testing, deployment, and production support.
Help shape the technical direction of the Payments platform, balancing performance, scalability, resilience, security, and cost through modern engineering practices.
Champion engineering excellence through clean, maintainable, and well-tested code, helping establish best practices across engineering teams.
Drive operational excellence by designing systems with observability, monitoring, resilience, and supportability at their core.
Utilise tools such as Dynatrace to improve platform visibility, monitoring, alerting, and service reliability.

Requirements

What you’ll need

A senior backend software engineer with deep experience designing and delivering scalable, resilient systems in complex enterprise environments.
Strong Java engineering expertise with experience building enterprise services, APIs, and integrations across distributed systems.
Knowledge in designing systems that serve large customer populations while maintaining high availability, performance, and security.
Work with ecommerce platforms, payment services, or highly transactional systems is advantageous.
Passionate about software quality, testing, maintainability, and engineering best practices.
Strong understanding of CI/CD, observability, production support, and operational excellence.

Benefits

Comp & perks

20% colleague discount across M&S products and selected third-party brands.
Competitive holiday entitlement with the potential to buy extra holiday days.
Discretionary bonus schemes awarded based on personal and business performance.
A generous Defined Contribution Pension Scheme and Life Assurance.
A tailored induction and extensive learning and development opportunities.
Amazing perks and discounts via the M&S Choices platform, including GymSave and the opportunity to become an M&S Shareholder.
A dedicated charity volunteer day to support a cause you're passionate about.
Access to a fantastic range of wellbeing support, including a 24/7 Virtual GP and wellbeing services.