Microsoft 365 Administrator

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Job Title: Tier 3 Microsoft 365 Administrator Location: Denver, CO / Brentwood, TN

Type: Contract Rate: $50/hr on W2

Candidates must be local to Denver or Brentwood. They must go onsite during the 3 days per month onsite days (Tues/Weds/Thurs of the 2nd full week of every month).

Job Summary: We are seeking a highly skilled Tier 3 Microsoft 365 Administrator to provide advanced technical support, administration, and engineering for our Microsoft 365 environment. This role serves as the 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.

Key Responsibilities

Microsoft 365 Administration & Engineering

Administer and optimize Microsoft 365 services, with deep hands-on ownership of:

SharePoint Admin Center (Online sites, permissions, governance, storage, sharing)

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 to 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

Required Qualifications

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

Preferred Qualifications

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 M365

Experience in regulated or highly secure environments

Working Conditions

May require participation in on-call rotation for critical incidents

Hybrid or remote work options depending on business needs