Senior Infrastructure Engineer

We are looking for an experienced Senior Engineer with a strong technical background in Microsoft 365, security, and modern workplace technologies. This role focuses on designing, securing, and improving Microsoft environments for customers, while acting as a trusted technical advisor and escalation point within the engineering team.



Key Responsibilities

• Design, deploy, and optimise Microsoft 365 environments including Exchange Online, Teams, SharePoint Online, OneDrive, and Microsoft 365 Groups.
• Lead tenant reviews, remediation projects, migrations, and platform standardisation.
• Design and manage secure identity solutions using Microsoft Entra ID.
• Implement and maintain security technologies including Conditional Access, MFA, Passwordless Authentication, PIM, Microsoft Defender, and Microsoft Purview.
• Manage and secure endpoints using Intune and Windows Autopilot across Windows, macOS, iOS, and Android.
• Apply Zero Trust and Microsoft security best practices to customer environments.
• Support compliance and governance requirements including GDPR and ISO-aligned controls.
• Use PowerShell and automation to improve efficiency, consistency, and service quality.
• Produce and maintain technical documentation, standards, and runbooks.
• Act as a senior escalation point for complex incidents and projects.
• Mentor junior engineers and contribute to technical standards across the business.
• Build strong customer relationships and translate business requirements into secure technical solutions.

• Strong hands-on experience with Microsoft 365 administration and architecture.
• Excellent knowledge of:
  • Microsoft Entra ID (Azure AD)
  • Intune & Windows Autopilot
  • Microsoft Defender & security tooling
  • SharePoint Online & Teams
  • Exchange Online
• Experience working within MSP or multi-tenant environments.
• Strong understanding of identity, endpoint security, and compliance best practices.
• Excellent troubleshooting, communication, and stakeholder management skills.
• Ability to lead technical decisions and work independently.

• PowerShell scripting and automation.
• Experience with Microsoft Sentinel and Defender XDR.
• Experience improving technical standards and engineering processes.

Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.