Minimum qualifications:

• 5+ years of experience administering Microsoft 365 within a large-scale enterprise environment.
• Expert-level hands-on experience managing SharePoint Online, Exchange Online, and Microsoft Teams via their respective Admin Centers.
• Strong scripting skills using PowerShell, Microsoft Graph, and M365 APIs for automation and administration.
• Solid understanding of Entra ID (formerly Azure AD), including identity, authentication, and access management.
• Experience troubleshooting hybrid environments, specifically integrating with on-premises Active Directory and Exchange hybrid setups.
• Strong analytical, communication, and technical documentation skills.

Preferred qualifications:

• Relevant Microsoft certifications (e.g., MS-102, Exchange, Teams, or Security).
• Experience configuring and managing Microsoft Purview, Defender for Office 365, and Intune.
• Proven experience executing large-scale tenant migrations to Microsoft 365.
• Previous experience working in highly regulated, compliant, or secure enterprise environments.
• Ability to participate in an occasional on-call rotation for critical incident resolution.

About the job:

As a Tier 3 Microsoft 365 Administrator, you will be the cornerstone of our advanced technical support, administration, and engineering efforts for the organization's Microsoft 365 ecosystem. In this role, you will serve as the definitive escalation point for the most complex technical challenges while leading platform optimization initiatives. You will partner closely with our security, identity, and infrastructure teams to ensure that our M365 environment remains secure, scalable, and highly reliable. Whether you are automating workflows, optimizing tenant-wide settings, or mentoring junior staff, your work will directly impact the daily productivity and security of the entire organization.

Responsibilities:

• System Administration & Engineering: Administer, optimize, and maintain M365 services with deep architectural ownership of SharePoint (sites, permissions, governance), Exchange (mailboxes, transport rules, retention), and Teams (policies, voice, apps).
• Tier 3 Support & Escalation: Serve as the highest-level escalation point for complex M365 incidents. Conduct root cause analyses (RCA), implement long-term fixes, and manage cases with Microsoft Premier/Unified Support through to resolution.
• Security & Compliance: Collaborate with security teams to design, implement, and maintain Conditional Access policies, Data Loss Prevention (DLP) rules, and eDiscovery/retention policies to meet strict regulatory requirements.
• Automation & Tooling: Drive operational efficiency by developing and maintaining automated scripts using PowerShell and M365 APIs to build standardized, self-service tooling.
• Strategic Leadership & Mentorship: Provide architectural input for new M365 projects, evaluate emerging features, author technical runbooks, and mentor Tier 1 and Tier 2 support staff on best practices.

Apply now