M365 Administrator
About The Position
We are seeking a highly skilled Microsoft 365 Administrator with hands‑on experience supporting mergers and acquisitions (M&A). This role is responsible for the administration, security, and optimization of the Microsoft 365 platform, with a strong emphasis on tenant‑to-tenant integrations, identity consolidation, data migrations, and post‑merger operational stabilization. The ideal candidate has operated in complex, enterprise environments, understands the technical and organizational realities of M&A, and can partner closely with Infrastructure, Security, Legal, HR, and business stakeholders to deliver seamless integrations.
Requirements
- 5+ years of hands‑on Microsoft 365 administration experience in an enterprise environment
- Demonstrated experience supporting M&A activities, including tenant integrations or divestitures
- Strong expertise in: Microsoft Entra ID (Azure AD) Exchange Online SharePoint Online / OneDrive Microsoft Teams
- Proficiency with PowerShell for automation and administration
- Solid understanding of identity management, security, and compliance concepts
- Experience working in hybrid identity environments
- Strong troubleshooting, documentation, and communication skills
Nice To Haves
- Experience with third‑party migration tools (e.g., Quest, BitTitan, ShareGate)
- Familiarity with Microsoft Purview, eDiscovery, retention, and information protection
- Experience working in regulated or global enterprise environments
- Microsoft certifications such as: Microsoft 365 Administrator Identity and Access Administrator Security Administrator
- Prior experience supporting divestitures or carve‑outs
Responsibilities
- Administer and support Microsoft 365 services including Entra ID (Azure AD), Exchange Online, SharePoint Online, OneDrive, Teams, Power Platform, and M365 security/compliance features
- Manage tenant configuration, licensing, identity lifecycle, access controls, and service health monitoring
- Implement and maintain security best practices, including Conditional Access, MFA, role‑based access control, and privileged identity management
- Support automation and administration using PowerShell and Graph API
- Lead and support M365 integration activities for mergers, acquisitions, and divestitures
- Plan and execute tenant‑to-tenant migrations, including: Exchange Online mailboxes OneDrive and SharePoint content Teams and collaboration workloads
- Design and implement identity consolidation strategies, including directory synchronization, account matching, and domain transitions
- Partner with Security and Legal teams to ensure data governance, retention, and compliance requirements are met during integrations
- Support Day‑0, Day‑1, and Day‑2 M&A readiness activities, including cutovers, coexistence, and post‑integration stabilization
- Develop migration runbooks, rollback plans, and post‑merger operational documentation
- Act as a technical escalation point for complex M365 issues
- Collaborate with Infrastructure, Service Desk, Security, and Application teams
- Participate in change management, incident response, and problem management processes
- Create and maintain technical documentation, standards, and operational procedures
- Provide guidance and mentoring to junior administrators and support teams
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What This Job Offers
Job Type
Full-time
Career Level
Mid Level
Education Level
No Education Listed
