Senior M365 Engineer: Exchange Online, Migration & Security

Randstad Technologies Recruitment

Greater London

On-site

GBP 111,000 - 166,000

Full time

7 days ago

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Job summary

Randstad Technologies Recruitment in London is seeking a Senior Microsoft 365 Engineer to join our global engineering team. You will own administration of Exchange Online, Teams, SharePoint Online, and related services, acting as the local SME for the London environment.

You will lead security, compliance, and migration initiatives including Mimecast to Microsoft 365, and collaborate on M365 architecture with Copilot-enabled features. This is a 6-month contract with potential extension.

Qualifications

8+ years of IT experience focused on Microsoft 365 platform engineering.
5+ years administering Exchange Online in large enterprise environments.
Deep knowledge of mail flow, transport rules, and messaging security.
Experience managing Azure AD / Entra ID and Intune.
Experience with SharePoint Online, Teams, and OneDrive.
Experience implementing M365 compliance features (retention policies, eDiscovery).
Experience with Mimecast, Proofpoint, or similar security platforms.
Bonus: PowerShell scripting and automation.
Experience in large regulated environments.

Responsibilities

Administer and optimize Exchange Online, Teams, SharePoint Online, and OneDrive.
Act as London local M365 SME in governance and strategy.
Configure Exchange Online mail flow and routing.
Support Mimecast to Microsoft 365 migration and related migrations.
Implement retention, eDiscovery, and compliance policies.
Collaborate on M365 architecture and new features like Copilot.
Monitor service health and handle advanced escalations.