Senior Microsoft 365 Migration Engineer

Senior Microsoft 365 Migration Engineer

The Select Group is looking to bring on a remote, EST based, Senior Microsoft 365 Migration Engineer to support enterprise-wide collaboration modernization and migration initiatives for a rapidly growing global organization. These engineers will provide strategic oversight, technical leadership, and hands-on engineering expertise across Microsoft 365 migrations, tenant integrations, endpoint modernization, and acquisition-related collaboration initiatives. 
                  
Senior Microsoft 365 Migration Engineer Responsibilities:

• Lead enterprise Microsoft 365 migration initiatives including tenant-to-tenant migrations and collaboration modernization programs. 

• Evaluate and improve migration methodologies currently being utilized by third-party vendors. 

• Design migration sequencing, coexistence planning, cutover strategies, rollback procedures, and stabilization planning. 

• Support migration and administration activities across Exchange Online, Microsoft Teams, SharePoint Online, OneDrive, Intune, and Entra ID / Azure AD. 

• Lead technical workshops and migration readiness discussions. 

• Support modern workplace transformation initiatives and endpoint readiness planning. 

• Assist with hybrid Microsoft 365 and Google Workspace coexistence environments where applicable. 

• Coordinate closely with infrastructure, networking, and cybersecurity teams during migration activities. 

• Troubleshoot complex post-migration issues related to identity, mail flow, authentication, and collaboration tools. 

• Support M&A integration efforts involving collaboration platforms, user migrations, endpoint transitions, and tenant alignment. 

• Conduct current-state assessments and migration planning for newly acquired organizations. 

• Assist with user experience standardization and operational transition planning. 

• Serve as a senior escalation point during migration and cutover activities. 

• Mentor junior engineers and support personnel. 

• Partner with project managers to support delivery planning and risk management activities. 

• Assist with documentation, knowledge transfer, and operational handoff activities. 

• 7+ years of enterprise Microsoft infrastructure and migration experience. 

• Deep expertise across Microsoft 365 technologies and migration tooling. 

• Strong experience with Exchange Online, Teams, SharePoint Online, OneDrive, Intune, and Entra ID / Azure AD. 

• Experience supporting large-scale migration and integration initiatives. 

• Strong troubleshooting and escalation management capabilities. 

• Experience operating in enterprise or consulting-based delivery environments.