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. Required Skills & Experience 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. Desirable Skills 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