Staff Software Engineer

MS Companies

Staff Software Engineer joining M&S to provide technical leadership and drive software development. Collaborating in multi-disciplinary teams to create innovative solutions for millions of customers.

Posted 6/15/2026full-timeLondon • 🇬🇧 United KingdomLeadWebsite

Tech Stack

Tools & technologies

CloudDistributed Systems

About the role

Key responsibilities & impact

Write, test, and debug code for complex features, distributed systems, or legacy migrations. Lead on designing and optimising deployment pipelines.
Provide technical guidance and support on complex, high-impact projects that align with team objectives, ensuring successful delivery of software solutions, while tackling the hardest technical challenges for the team.
Lead the development of architectural and design solutions for large-scale projects, ensuring that software solutions align with business requirements, long-term technology strategy, and technology standards.
Review and provide constructive feedback on code submissions from team members, ensuring alignment to technical standards, maintainability, and high-quality software.
Communicate and collaborate with a diverse range of collaborators, including senior management and external partners, while leading or starting communities of practice.
Actively mentor and coach engineers at all levels, fostering an environment of continuous learning and growth, while participating in hiring processes and training engineers up to Staff standard.
Demonstrate a production first attitude, continuously considering observability and maintaining Service Level Objectives, while delivering change at pace.
Embrace emerging technologies and trends, and share insights with the organisation, while developing and maintaining the team technology roadmap and leading on the strategic approach to supervising and maintaining production systems.
Write sophisticated system and operations documentation and perform advanced internal tech talks to share knowledge and standard processes.
Assist with the recruitment and onboarding of new engineers into the organisation

Requirements

What you’ll need

Strong experience in most of the tech stack areas, from front-end through to back-end
Expert understanding of software development practices
Solid expertise with distributed version controls systems like Git
Proficiency with Test Driven Development, Behaviour Driven Development and non-functional testing
Strong experience of DevOps: you build it, you run it
Advocate of Continuous integration and Continuous Delivery
Experience with cloud engineering and highly scalable applications
Proficiency of documenting software design technical decisions and recommendations
Great leadership and coaching skills with the ability to develop engineering colleagues

Benefits

Comp & perks

20% Colleague discount on most things from furniture, fashion and food.
A first-class welcome to M&S with a tailored induction and a wide range of training schemes to help with your learning and development.
Attractive annual bonus, based on company performance and personal objectives.
Competitive holiday entitlement with the potential to buy extra holiday days!
Amazing perks and discounts via our M&S Choices website. Including GymSave – that offers up to 25% off Gym Memberships and the option to become an M&S Shareholder using our ShareSave & ShareBuy Schemes.
Charity Volunteer Day – A paid day away from work to support your chosen charity.
A very generous Defined Contribution Pension Scheme and Life Assurance.
Every colleague at M&S has access to a fantastic range of wellbeing support – this includes access to our 24/7 Virtual GP, PAM Assist to support you & your family as well as many other schemes

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

software developmentdistributed systemsdeployment pipelinesTest Driven DevelopmentBehaviour Driven DevelopmentDevOpscloud engineeringscalable applicationsversion control (Git)software design documentation

Soft Skills

leadershipcoachingmentoringcommunicationcollaborationconstructive feedbackcontinuous learningproblem-solvingcommunity buildingtechnical guidance