M365 Engineer

Senior Microsoft 365 Engineer (Exchange, SharePoint, Teams) Location: London (Hybrid)
Sector: Defence | Government Projects
Working Model: Agile / DevOps

Eligibility & Clearance – Essential Due to the secure nature of this role:

• Must have SC clearance
• Must be a sole national of the United Kingdom, Italy, or Japan
• Dual citizenship is not permitted

Applications that do not meet these criteria cannot be considered.

The Role We are seeking a Senior Microsoft 365 Engineer to design, deliver, and support secure collaboration services across Exchange Online, SharePoint Online, and Microsoft Teams within a defence environment.
You will work as part of an Agile team, contributing to the delivery of scalable, compliant M365 solutions in highly regulated programmes.
Key Responsibilities

• Engineer and support Exchange Online, SharePoint Online, and Microsoft Teams
• Implement security and compliance controls (DLP, retention, governance)
• Automate processes using PowerShell and M365 APIs
• Contribute to CI/CD pipelines and DevOps practices
• Act as an escalation point and lead issue resolution
• Collaborate with architecture, security, and product teams

Requirements

• Strong experience across Microsoft 365 (Exchange, SharePoint, Teams)
• PowerShell scripting and automation experience
• Knowledge of M365 security and compliance
• Experience with Azure AD / Entra ID
• Exposure to DevOps tooling (Azure DevOps, Git, CI/CD)
• Background in enterprise or regulated environments

Desirable

• Defence, government, or secure environment experience
• Microsoft Purview or advanced compliance tooling
• Teams voice / telephony knowledge
• Relevant Microsoft certifications