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MS Companies

Principal Software Engineer – Customer Platforms

MS Companies

Principal Software Engineer at M&S, leading modernisation of Customer Platforms and technical excellence across engineering teams. Collaborating with various teams to design, build, and maintain mission-critical systems.

Posted 6/29/2026full-timeLondon • 🇬🇧 United KingdomLeadWebsite

Tech Stack

Tools & technologies
CloudKubernetes

About the role

Key responsibilities & impact
  • Lead technical excellence from design to operations and launch of core product features or strategic programmes
  • Drive technical direction and influence our overall strategy informing decisions on both Technology and Product investments as well as teams’ setup
  • Champion Communities of Practice to help establish engineering excellence at M&S
  • Lead by example via contributions to our engineering ecosystem
  • Pioneer and promote methodologies like clean code and clean architecture
  • Advocate for engineering productivity, delivery quality and operational excellence through a continuous ecosystem
  • Drive DevOps practices to automate the Product development life cycle and ownership demeanour
  • Partner with both Engineering, Technology and Product leadership to ensure strategies align
  • Develop the best and mentor other senior engineering roles across the entire landscape
  • Promote effective innovation across all of engineering
  • Advocate and strategize for continuous industrialisation and product-minded tech capabilities
  • Inspire ideas to foster purpose and mastery to engineering teams, leading them towards autonomy and maturity
  • Amplify engineering teams by efficiently unblocking them with direction, leading upward, and establishing alignment
  • Raise the profile of MS Tech through public content and contribution/creation into open-source technology
  • Support recruitment, onboarding and internal and external brand outreach activities

Requirements

What you’ll need
  • Significant track record of strategic and innovative thinking, as well as execution and implementation
  • Specialist in clean code and implementation of design patterns for common problems.
  • Depth of knowledge in Information Security, you can design, quality review and quality assure solutions and services with security controls embedded.
  • Confident driving system design conversations, building systems characterised by high levels of risk, impact, and business or technical complexity
  • Able to analyse current processes, identify, and implement opportunities to optimise processes, and lead and develop a team of specialists to deliver service improvements
  • Experience of using a variety of methods of prototyping. You know how to share methodologies and can mentor others. You look at strategic service design end to end
  • Strong ability to influence industry-based models for the development of new technology applications. You develop effective implementation and procurement strategies, consistent with business needs. You ensure alignment to relevant technical strategies, policies, standards, and practices
  • Strong understanding of quality assurance, testing quadrants and the testing pyramid, and how to apply them
  • Ability to lead senior engineers and technical customers to a desired outcome, without prescribing it
  • Authoritative skills at cloud computing (network, security, serverless, Kubernetes etc) and automation
  • Experience with implementation of Observability and Reliability using market technologies (e.g.: New Relic)
  • Good experience with Performance Engineering (load testing, derivations, tuning, core web vitals, page speed etc.)
  • Expertise in reliability testing
  • Able to influence people at senior levels and from the highly technical to non-technical

Benefits

Comp & perks
  • Competitive salary
  • Flexible working hours
  • Professional development budget
  • Home office setup allowance
  • Global team events

ATS Keywords

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Applicant Tracking System Keywords

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

Hard Skills & Tools
System DesignQuality AssuranceObservability ImplementationReliability TestingPrototyping Methods
Soft Skills
Strategic ThinkingMentoringInfluencingTeam LeadershipInnovation Advocacy