Principal - EUC / MDM Platform Engineer

Business Introduction

GSK remains committed to achieving bold commercial ambitions for the future. By 2031, we aim to deliver £40 billion in annual sales, leveraging our existing strong performance momentum to significantly increase our positive impact on the health of billions of patients globally. Our Ahead Together strategy is centred on early intervention to prevent and alter the course of disease, thereby protecting people and supporting healthcare systems. Our diverse portfolio consists of vaccines, specialty medicines, and general medicines. Through continuous innovation and a dedicated focus on scientific and technical excellence, we strive to develop and launch new, groundbreaking treatments that address critical health challenges.

Job Purpose

Build, automate and run the platform that manages every device 50,000+ employees across [X] countries depend on — Windows and macOS laptops and desktops, iOS and Android phones and tablets, corporate-owned and BYOD, plus the rugged, lab, clinical and shop-floor devices that follow none of the usual rules.

This is the hands-on build role for the device estate. The Platform Engineer takes architecture direction and a prioritised backlog and turns them into working, tested, automated, documented configuration in production. The expectation is engineering rather than administration: enrolment profiles, compliance policies, application packages and remediation scripts expressed as code and deployed through pipelines, not clicked through a console and remembered by whoever was on shift.

The role also runs what it builds. Platform Engineers own the operational health of the endpoint platform — diagnosing the awkward, intermittent, only-happens-on-that-hardware-revision problems that never reproduce in a lab, and eliminating the root cause rather than closing the ticket. Every change carries real blast radius: a bad compliance policy can lock 50,000 people out of their email before lunch.

Key Responsibilities

• Design, build, test and deploy endpoint configuration across the estate: Intune configuration and compliance policies, Autopilot and enrolment profiles, Windows Update rings, macOS configuration profiles, and iOS/Android enterprise policy.

• Build and maintain the provisioning experience — zero-touch deployment, enrolment journeys, and the out-of-box experience that determines whether a new starter is productive on day one or raising a ticket.

• Package, test and deploy applications at scale — Win32 and MSIX packaging, macOS packages, mobile app assignment and configuration, dependency and supersedence management.

• Implement to the reference architecture and standards set by the Principal Architect; raise a design challenge when reality does not match the design rather than quietly deviating.

• Deliver backlog items to production with the tests, telemetry, documentation and rollback path included — "done" means running and observable across the fleet, not merely configured for one pilot device.

• Automate everything that would otherwise be done twice: provisioning, enrolment, lifecycle, licence and asset reconciliation, reporting, and proactive remediation.

• Build detection and remediation scripts that fix problems on the device before the user notices, and instrument them so you know whether they worked.

• Express endpoint configuration as code in version control; build and maintain CI/CD pipelines for policy and package deployment with automated validation and staged ring-based rollout.

• Replace manual runbook steps with self-healing and self-service; treat a recurring manual task as a defect with a backlog item attached.

• Own operational health of assigned platforms: enrolment success rates, policy assignment and compliance reporting, patch and OS currency, application deployment success, and device performance.

• Investigate and resolve complex incidents and problems — third-line escalation for endpoint issues — and drive permanent root-cause elimination.

• Participate in an on-call rotation for major incidents affecting the device estate.

• Manage the continuous change stream from vendors: Windows and macOS feature updates, annual iOS and Android major releases, MDM platform updates and hardware model introductions. Test in a lab, assess compatibility, and roll out under control.

• Maintain patch, OS currency and vulnerability remediation to target; hunt and correct configuration drift.

• Implement and maintain endpoint security controls: disk encryption and key escrow, EDR deployment and health, application control, local privilege management, security baselines, and device compliance feeding Conditional Access.

• Remediate endpoint vulnerabilities in partnership with Cyber Security, at fleet scale and to SLA.

• Produce the evidence audits require — configuration baselines, patch compliance, change records — generated automatically wherever possible.

• Build to regulated-environment requirements where applicable, including GxP-qualified endpoints and the validation and change control they demand.

• Work daily with the Product Owner on refinement and estimation, and with the Architect on design; give honest estimates and flag risk early.

• Produce operational documentation, runbooks and knowledge articles good enough that the service desk can use them and the next engineer can pick the work up.

• Support and coach the service desk, deskside and field teams; reduce escalation volume by transferring capability, not by absorbing it.

• Mentor junior engineers and contribute to engineering standards and code review within the squad.

Professional Qualifications

• Bachelor's degree in Computer Science, Engineering or a related discipline, or equivalent demonstrable professional experience. Strong practical experience is an acceptable substitute for formal qualification.

• Relevant certifications desirable (e.g., Microsoft 365 Certified: Endpoint Administrator Associate or Expert, Jamf Certified Tech/Admin, Apple Certified Support Professional, Android Enterprise Professional, Azure Administrator, ITIL v4 Foundation).

Area of Specialisation

• Hands-on endpoint platform engineering — Microsoft Intune / Endpoint Manager, Autopilot, Windows Update for Business, Endpoint Analytics — at 50,000-device scale.

• Mobile device management engineering across iOS (Apple Business Manager, ADE/DEP, APNs, supervised devices) and Android Enterprise (work profile, fully managed, dedicated/kiosk, Managed Google Play), plus app protection and containerisation for BYOD.

• Complex endpoint troubleshooting across hardware, OS, identity, network and application layers, with root-cause elimination rather than ticket closure.

Experience Required

• Overall 10+ and 4+ years in IT engineering or endpoint operations, including 3+ years working hands-on with an enterprise MDM/UEM platform (Intune, Jamf, Workspace ONE or equivalent) in production.

• Experience engineering or supporting an estate of 5,000+ devices; comfortable with the difference between a small fleet and a large one.

• Demonstrable hands-on capability in Windows endpoint management via Intune (or MECM) and at least one mobile platform (iOS or Android enterprise) — at a level that includes troubleshooting, not only configuration.

• Practical experience packaging and deploying applications at scale, including detection logic and failure diagnosis.

• Working PowerShell proficiency with real examples of automation delivered into production, plus practical experience calling the Microsoft Graph API.

• Familiarity with Git and pull-request-based working; willingness to work configuration-as-code if not already doing so.

• Experience operating in an ITIL-aligned change and incident process, including ownership of production change against a live device fleet.

• Experience delivering within a Scrum or Kanban squad, including refinement, estimation and sprint commitment.

• Willingness to participate in an on-call rotation for