Platform Specialist (Microsoft 365, E5, Defender, Sentinel)

Platform Specialist (Microsoft 365, E5, Defender, Sentinel)

Posted 1 week ago by Ivy Rock Partners

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£500 Per day
Inside
Hybrid
North-West London, UK
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Azure Active Directory Budgeting Capital Expenditure Change Advisory Change Requests Cloud Computing Cloud Technology Collaboration Tools Endpoint Management File Servers Information Technology Infrastructure Library Internet Security Management Microsoft 365 Microsoft Azure Microsoft Office 365 Microsoft Windows Strategic Roadmaps System Center Configuration Manager Technology Strategies Windows Servers

Summary: The Platform Specialist role at a North West London Local Authority involves managing and optimizing Microsoft 365, E5, Defender, and Sentinel within the IT function. This position requires a technical expert to ensure service stability and contribute to strategic initiatives. The role is part of a 6-month contract with a hybrid working arrangement. The candidate will also provide leadership and mentoring to support staff while managing infrastructure changes and technology strategy.

Key Responsibilities:

  • Lead the administration and optimisation of Microsoft 365, E5, Defender, Sentinel, Azure AD, Endpoint Manager, Exchange Online and SharePoint
  • Oversee and maintain the council's production Servers, backups, cloud environments and Internet security infrastructure
  • Act as a technical escalation point, providing third-line support across the Microsoft stack
  • Provide leadership and mentoring to support staff, ensuring high service levels and robust issue resolution
  • Manage infrastructure change requests and represent the team at Change Advisory Boards (CAB)
  • Contribute to technology strategy, supplier management and budget control (up to £4m capex and £2m opex)

Key Skills:

  • Deep technical expertise in Office 365, E5, Defender, Sentinel, Azure AD, Windows Server, SCCM, Intune and PowerShell
  • Experience supporting enterprise infrastructure for a large organisation (2000+ users)
  • Strong understanding of ITIL processes and infrastructure governance
  • Track record of delivering secure, stable platforms and resolving complex incidents
  • Experience managing teams and coordinating cross-functional technical work
  • Experience working within a public sector or local government environment

Salary: £500/day

City: North West London

Country: UK

Working Arrangements: Hybrid

IR35 Status: Inside IR35

Seniority Level: Mid-Level

Industry: IT

Detailed Description From Employer:

Platform Specialist (Microsoft 365, E5, Defender, Sentinel)

North West London Local Authority
6 month contract | £500/day (Inside IR35) | Hybrid (3 days/week onsite, 2 days/week WFH)

A North West London Local Authority is looking for a highly skilled Platform Specialist to join their Transformation and Technology division on an initial 6 month contract.

This is a key technical role within the council's IT function, supporting enterprise-level infrastructure, collaboration tools and cloud platforms. You'll be the subject matter expert across Microsoft 365, E5, Defender, and Sentinel ensuring day-to-day service stability while also contributing to strategic roadmaps and governance.

Key Responsibilities:

  • Lead the administration and optimisation of Microsoft 365, E5, Defender, Sentinel, Azure AD, Endpoint Manager, Exchange Online and SharePoint

  • Oversee and maintain the council's production Servers, backups, cloud environments and Internet security infrastructure

  • Act as a technical escalation point, providing third-line support across the Microsoft stack

  • Provide leadership and mentoring to support staff, ensuring high service levels and robust issue resolution

  • Manage infrastructure change requests and represent the team at Change Advisory Boards (CAB)

  • Contribute to technology strategy, supplier management and budget control (up to £4m capex and £2m opex)

Required Experience:

  • Deep technical expertise in Office 365, E5, Defender, Sentinel, Azure AD, Windows Server, SCCM, Intune and PowerShell

  • Experience supporting enterprise infrastructure for a large organisation (2000+ users)

  • Strong understanding of ITIL processes and infrastructure governance

  • Track record of delivering secure, stable platforms and resolving complex incidents

  • Experience managing teams and coordinating cross-functional technical work

  • Experience working within a public sector or local government environment

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