Senior Systems Engineer

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, underpinned by ServiceNow, automation, and generative AI. Our 24x7 Operations squads support the health and performance of Microsoft Modern Workplace environments, ensuring proactive management, preventative maintenance, and operational excellence.

As a Senior Systems Engineer, you will provide third-line expertise in Microsoft Endpoint Manager technologies, delivering proactive support, driving continual improvement, and acting as a technical escalation point. You will work across customer environments, supporting compliance, automation, and standardisation initiatives. This is a shift-based role within our 24x7 operational squad structure, suitable for a technically confident engineer with a passion for Modern Workplace services and a proactive, mentoring-led approach.

• Support, maintain, and implement Microsoft Endpoint Manager-based solutions.
• Lead troubleshooting for complex Modern Desktop incidents, taking ownership of investigations and coordinating resolution.
• Mentor and guide junior engineers in the squad, sharing expertise and reviewing escalations.
• Deliver automation initiatives using PowerShell to improve repeatability and reduce manual effort.
• Ensure compliance with ISO 27001, ISO 9001, and relevant security standards (e.g. CIS, CE+).
• Create and maintain structured technical documentation, aligned to security and operational standards.
• Package and deploy applications using Microsoft Intune and Configuration Manager (SCCM).
• Participate in customer meetings when required, such as change advisory boards or technical reviews.
• Contribute to knowledge sharing through ServiceNow KB articles and team documentation.

• Demonstrable experience supporting Microsoft Endpoint Manager (Intune, SCCM) in enterprise settings.
• Strong understanding of Microsoft 365 and Entra ID (Azure AD), with ability to design and support workplace services.
• Knowledge of Windows OS management, application deployment, and compliance policies.
• Experience authoring infrastructure, support, and procedural documentation.
• Strong mentoring capability and willingness to support the development of others.
• Experience delivering automation using PowerShell.
• Excellent communication and stakeholder engagement skills.
• Familiarity with ITIL processes (Incident, Problem, Change).
• Eligibility for UK Government Security Check (SC) clearance.

Desirable Skills and Experience

• Microsoft 365 Certified: Endpoint Administrator Associate.
• Microsoft 365 Certified: Administrator Expert.
• Microsoft Certified: Azure Virtual Desktop Specialty.
• Exposure to operating within shared services or multi-customer MSP environments.

Additional Information

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.

Wellbeing that means something

• 26 days’ holiday + bank holidays (and the option to buy more) plus 1 paid volunteering day every year
• Exceptional family leave, 26 weeks fully paid maternity/adoption, 4 weeks fully paid paternity, 22 weeks fully paid shared parental leave, plus 5 days paid bereavement leave
• Robust sick pay of up to 13 weeks full pay + 13 weeks half pay
• 24/7 Employee Assistance Programme for confidential support
• Private medical insurance for everyone, no medical-history exclusions

Financial benefits that have your back

• Group-wide performance bonus, when we win, you win
• Income protection: up to 75% salary for 5 years if you ever need it

Grow your career with us

• SkillsHub learning platform with leadership pathways, future-manager training, and a huge online library
• Access to external training and apprenticeships

Making a Difference 

• MatchIt! Fundraise for a cause close to your heart and OneAdvanced will match part of the funding
• Pennies from Heaven donate the pennies from your pay check to help make a difference without lifting a finger

Plus plenty other flexible benefits to suit your lifestyle on our RewardHub, including:

• ULEV car scheme with 1,000+ models
• Dental insurance, Health Cash Plan, Critical Illness Cover, Partner Life Cover