Tier 3 M365 Admin

Job Title: Tier 3 Microsoft 365 Engineer
Duration: 9+ Month Contract (with possibility for extension or conversion)
Location: Denver, CO or Brentwood, TN 
Work Schedule: Hybrid – Must be onsite 3 days per month (Tuesday, Wednesday, Thursday of the 2nd full week each month)

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Job Summary
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.

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Key Responsibilities Microsoft 365 Administration & Engineering

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  Administer and optimize Microsoft 365 services with deep hands-on ownership of:
  
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    SharePoint Admin Center (Online sites, permissions, governance, storage, sharing)
    
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    Exchange Admin Center (Online mailboxes, transport rules, retention, hybrid configurations)
    
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    Teams Admin Center (Policies, voice, meetings, apps, and integrations)
    
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  Design, implement, and maintain M365 configurations aligned with organizational standards and best practices
  
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  Manage tenant-wide settings, service health, licensing, and capacity planning
  

Tier 3 Support & Escalation

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

Security, Compliance & Governance

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

Automation & Optimization

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

Collaboration & Leadership

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

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Required Qualifications

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  5+ years of experience administering Microsoft 365 in an enterprise environment
  
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  Expert-level experience with:
  
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    SharePoint Online and SharePoint Admin Center
    
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    Exchange Online and Exchange Admin Center
    
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    Microsoft Teams and Teams Admin Center
    
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  Strong PowerShell scripting skills for M365 administration
  
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  Solid understanding of Azure AD / Entra ID (identity, authentication, and access management)
  
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  Experience troubleshooting hybrid environments (on-prem AD, Exchange hybrid)
  
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  Strong analytical, documentation, and communication skills
  
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  Must be local to Denver, CO or Brentwood, TN and able to meet onsite requirements
  

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Preferred Qualifications

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  Microsoft certifications (e.g., MS-102, Exchange, Teams, or Security certifications)
  
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  Experience with Microsoft Purview, Defender for Office 365, and Intune
  
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  Familiarity with large-scale migrations to Microsoft 365
  
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  Experience working in regulated or highly secure environments
  

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Working Conditions

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  Participation in an on-call rotation for critical incidents may be required
  
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  Hybrid work model with defined onsite expectations
  

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