Systems Engineer

Join One Advanced

Our IT Managed Services business enables customers to innovate, transform, and seize new opportunities. The Technical Operations function underpins this mission by delivering enterprise-grade, 24x7x365 technical support to mid-market clients across both public and private sectors.

We operate a shared services model aligned with ITIL v4, enabled by Service Now, automation, and the practical use of generative and agentic AI. Our 24x7 Operations squads provide proactive management and incident response across infrastructure, cloud and modern workplace services.

As a Systems Engineer within our 24x7 Operations function, you will be a capable all-rounder, providing third-line operational support across both core infrastructure and Microsoft Modern Workplace services. You will contribute to live service stability through effective incident resolution, proactive maintenance, and disciplined execution of standard changes, escalating complex or ambiguous issues to Senior Systems Engineers and Squad Managers as needed.

This is a shift-based role forming part of a 24x7 operations squad. Candidates must be willing and able to work a 24x7 pattern including nights, weekends, and public holidays.

Key Responsibilities

• Provide third-line support across Windows Server, Active Directory, Microsoft Azure, Microsoft 365 and virtualisation platforms.
• Support Microsoft Modern Workplace services, including Windows client operating systems, Microsoft Intune, Configuration Manager (SCCM) and device compliance policies.
• Resolve incidents, fulfil service requests and implement approved changes in line with ITIL processes and operational standards.
• Carry out patching, backup checks, endpoint updates and configuration tasks using defined runbooks and tooling.
• Use monitoring, event management and CMDB data to support effective triage and resolution activities.
• Maintain accurate and timely updates within Service Now, ensuring tickets, changes and configuration items are correctly recorded.
• Participate fully in shift handovers, ensuring continuity of service awareness and in-flight actions.
• Identify recurring issues, procedural gaps or monitoring noise and raise improvement opportunities through the appropriate channels.
• Contribute to the creation and maintenance of knowledge articles, runbooks and operational documentation.
• Use basic scripting and automation tooling (e.g. Power Shell, Power Platform, Microsoft Graph, AI) to support repeatable operational tasks, under guidance from Senior Systems Engineers.

• Practical experience supporting Microsoft-based infrastructure and workplace services in an operational environment.
• Working knowledge of Windows Server administration and core Active Directory concepts.
• Foundational experience with Microsoft Azure and Microsoft 365 services.
• Experience supporting Windows endpoint environments, including Intune and/or Configuration Manager.
• A structured, methodical approach to troubleshooting and incident resolution.
• Familiarity with ITSM tools such as Service Now, including accurate ticket and change management.
• Understanding of ITIL practices, particularly Incident, Change and Problem Management.
• Clear written and verbal communication skills, with the ability to document actions and outcomes effectively.
• Capability to work a 24x7 shift pattern, including nights, weekends and public holidays.
• Eligibility for UK Government Security Check (SC) clearance.

Desirable Skills and Experience

• Exposure to virtualisation technologies such as VMware or Hyper‑V.
• Experience using monitoring tools such as Logic Monitor or equivalent.
• Basic scripting or automation experience (e.g. Power Shell, Power Platform, Microsoft Graph, AI) to support repeatable operational tasks.
• Awareness of ISO
  27001 and operational security controls within live service environments.
• Experience working in a shared services or MSP operating model.
• Microsoft certifications such as Azure Fundamentals, Microsoft 365 Fundamentals or Endpoint Administrator Associate.

Please note, applicants must have the legal right to work in the UK at the time of application.

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