Senior M365 Engineer

Senior M365 Engineer (12-Month Contract)

Location:

London, UK (Local SME for PL Re) Duration: 12 Months Work Mode: 4 Days in Office

We are seeking a Senior M365 Engineer for a 12-month contract to serve as a Subject Matter Expert (SME) in our London office. You will lead critical migrations, manage local stakeholder governance for our PL Re division, and partner with global engineering on Copilot and new feature adoption.

• Migrations & Projects:
  Lead Mimecast-to-M365 and home drive-to-One Drive migrations; manage retention/compliance policy rollouts.
• Network & Performance:
  Resolve Teams and network-related issues for London and international offices.
• Security & Mail Flow:
  Act as Line 1 security expert (EOP, mail flow rules, routing, encryption) and manage Proofpoint integrations.
• Architecture & Strategy:
  Design and implement M365 solutions in a global environment, assist with the enterprise roadmap, and provide expert technical assistance to business units.
• Compliance:
  Participate in security reviews and manage e-discovery, legal holds, and archived solutions.
• Operations:
  Support core services (Teams, One Drive, Exchange, SPO), monitor service updates/roadmaps, and handle escalated incidents.

• 8+ years: SME-level experience in M365 security, architecture, and design (Exchange Online, SPO, Intune, Azure AD, One Drive, Teams).
• 5+ years:
  Exchange Admin in large-scale, 24/7 environments.
• 5+ years:
  Expertise with Azure AD, Intune, and Microsoft EMS security.
• 5+ years:
  Experience with Microsoft and Proofpoint e-discovery/compliance processes.

Randstad Technologies is acting as an Employment Business in relation to this vacancy