Tier 3 Microsoft 365 Engineer

We are seeking a highly skilled Tier 3 Microsoft 365 Engineer to provide advanced technical support, administration, and engineering for our Microsoft 365 environment.

This role serves as the highest-level escalation point for complex issues, leads platform optimization efforts, and partners closely with security, identity, and infrastructure teams to ensure a secure, scalable, and reliable M365 ecosystem., Exchange Admin Center (Online mailboxes, transport rules, retention, hybrid configurations) + Teams Admin Center (Policies, voice, meetings, apps, and integrations) * Design, implement, and maintain M365 configurations aligned with organizational standards and best practices * Manage tenant-wide settings, service health, licensing, and capacity planning

Tier 3 Support & Escalation * Act as the highest-level escalation point for complex M365 incidents and service degradation * Perform root cause analysis (RCA) and implement long-term corrective actions * Engage Microsoft Premier/Unified Support as needed and manage cases through resolution

Security, Compliance & Governance * Partner with security teams to implement and maintain: + Conditional Access policies + Data Loss Prevention (DLP) + Retention and eDiscovery policies * Ensure compliance with organizational and regulatory requirements * Support audits and security reviews related to M365 services

Automation & Optimization * Develop and maintain automation using PowerShell, Microsoft Graph, and M365 APIs * Improve operational efficiency through scripting, standardization, and self-service tooling * Evaluate and deploy new M365 features and capabilities

Collaboration & Leadership * Mentor Tier 1 and Tier 2 support staff * Create and maintain technical documentation, runbooks, and standards * Provide architectural input for M365-related projects and migrations

5+ years of experience administering Microsoft 365 in an enterprise environment * Expert-level experience with: + SharePoint Online and SharePoint Admin Center + Exchange Online and Exchange Admin Center + Microsoft Teams and Teams Admin Center * Strong PowerShell scripting skills for M365 administration * Solid understanding of Azure AD / Entra ID (identity, authentication, and access management) * Experience troubleshooting hybrid environments (on-prem AD, Exchange hybrid) * Strong analytical, documentation, and communication skills * Must be local to Denver, CO or Brentwood, TN and able to meet onsite requirements, Microsoft certifications (e.g., MS-102, Exchange, Teams, or Security certifications) * Experience with Microsoft Purview, Defender for Office 365, and Intune * Familiarity with large-scale migrations to Microsoft 365 * Experience working in regulated or highly secure environments