Microsoft Engineer

O365 Engineer -4Executes Microsoft 365 tenant migrations, mailbox/data migrations, and DNS cutovers for acquired entities, ensuring a seamless transition to the client's collaboration environment.Reports to: Project Lead / Collaboration LeadKey Responsibilities• Plan and execute O365 tenant-to-tenant or cross-forest mailbox migrations• Manage DNS record changes and cutover sequencing for mail flow, SharePoint, and Teams• Configure and validate Exchange Online, OneDrive, and SharePoint Online post-migration• Coordinate migration windows with the Project Lead and affected business units• Troubleshoot mail flow, licensing, and data migration issues during and after cutover• Document migration runbooks and rollback procedures• Support user communication and readiness activities ahead of cutoverRequired Qualifications• 5+ years hands-on experience with Microsoft 365 administration and migration tools (e.g., BitTitan, Quest, native O365 tools)• Strong understanding of Exchange Online, Azure AD/Entra ID, DNS, and mail flow• Experience with tenant-to-tenant migrations in M&A or divestiture scenariosPreferred Qualifications• Microsoft 365 Certified: Administrator Expert (or equivalent)• Experience with hybrid Exchange environments and PowerShell scripting for migration automation