Senior M365 Administrator

About the role

Join our DWEI (Digital Workspace and Employee Infrastructure) team to own the operational health, governance, and continuous improvement of Harvard Business Publishing's core Microsoft 365 services. You'll be the hands-on platform owner for day-to-day administration, reliability, and optimization across Exchange Online, SharePoint Online, OneDrive for Business, Microsoft 365 Apps, and key collaboration tools-while partnering closely with teammates in shared ownership areas like Microsoft Teams and Microsoft Entra. Copilot is integral to how employees work across Microsoft 365. In this role, you will help ensure Copilot is easily leveraged by all workers and clear guidance is provided to accelerate its adoption. This is an individual contributor role with close collaboration across IT peers (identity, security, endpoint/device, service desk) and business stakeholders to deliver reliable services and an excellent employee experience.

Responsibilities

• Own M365 operations and service health: Administer, monitor, and continuously improve core Microsoft 365 workloads, proactively resolving issues and reducing repeat incidents through standardization and operational excellence.
• Lead incident response and vendor escalation: Triage incidents, coordinate cross-team response, manage communications, and work with Microsoft Support through resolution; drive post-incident reviews and preventative improvements.
• Manage Exchange Online operations: Own mailbox administration, shared mailboxes, key operational configurations (e.g. mail flow rules), and day-to-day reliability for Exchange Online and Outlook/Calendar experiences.
• Own SharePoint Online governance and administration: Maintain governance patterns for sites and content, manage permissions models, implement secure sharing configurations, and improve information architecture and lifecycle management.
• Own OneDrive for Business configuration and experience: Operate and optimize OneDrive sharing posture, sync health troubleshooting patterns, storage/lifecycle governance, and common collaboration scenarios.
• Administer and optimize Microsoft 365 Apps: Coordinate Office apps update posture and channels, baseline add-ins, and ensure a consistent and supportable configuration across the enterprise.
• Support Viva suite services (as applicable): Administer and help HBP review and adopt Viva Amplify, Engage, Insights, Learning, Topics, Pulse, Reflect, and Glint.
• Shared ownership partnership (Teams and Entra): Collaborate with peer owners to align governance and operational practices for Microsoft Teams and Microsoft Entra, ensuring consistent policy outcomes and excellent user experience.
• Support team members by reviewing code and configurations, sharing best practices, and helping ensure consistent, reliable implementations.
• Enable Copilot readiness and quality outcomes: Improve Copilot results by helping workers strengthen their fundamentals.
• Drive adoption and employee experience improvements: Partner with stakeholders to reduce friction in common scenarios (sharing, access requests, collaboration design) and deliver practical user guidance, training, and change communications.
• Automate and document operational work: Use PowerShell and Microsoft Graph concepts to build reporting/automation, reduce toil, and maintain runbooks, standards, and knowledge articles for repeatable support.
• Administer additional M365 tools in scope: Provide operational ownership and support for Planner, To Do, Lists, Forms, Sway, Whiteboard, Visio, Bookings, People, and Places (as applicable to M365 experiences).

Requirements

• 7+ years of hands-on Microsoft 365 administration experience in an enterprise environment, with demonstrated ownership of service health, configuration, and governance.
• Strong operational expertise in SharePoint Online, OneDrive for Business, Exchange Online, and Microsoft 365 Apps (administration, troubleshooting, lifecycle, and governance).
• Demonstrated ability to lead/coordinate incident response, root cause analysis, and preventative follow-through in a production environment.
• Proficiency with PowerShell for administration and automation; comfort with Microsoft Graph concepts for reporting and operational improvements.
• Working knowledge of security/compliance-aligned configuration approaches (auditing posture, retention readiness, sensitivity/labeling awareness) and ability to partner effectively with security/compliance stakeholders.
• Strong collaboration and communication skills-able to work closely with peers in shared ownership models (Teams/Entra) and translate technical decisions into clear user impact and guidance.
• A practical, employee-experience mindset: able to b

Benefits

Additional Information

Harvard Business Publishing (HBP) - the leading destination for innovative management thinking. We reach lifelong learners to improve the practice of management in a changing world. This mission inspires each of us to unlock the leader in everyone - including you!

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