Microsoft Administrator

Title: IT Infrastructure Administrator III / Microsoft 365 Administrator

Location: Columbus, OH

Duration: 04 months

ONLY USC

Position Overview

Client is seeking a skilled and security-focused Microsoft 365 Administrator to join our Corporate Information Technology team. This role is responsible for the administration, optimization, and security of our Microsoft 365 environment within a hybrid and multi-tenant enterprise infrastructure.

The ideal candidate combines strong hands-on technical expertise with a proactive, service-oriented mindset. This individual will manage Microsoft 365 services, support secure identity and access management, partner closely with Security teams, and serve as a Tier 3 escalation point for complex collaboration and messaging issues.

Key Responsibilities

Microsoft 365 Administration & Operations

Administer and maintain Microsoft 365 services including:

Exchange Online

SharePoint Online

OneDrive for Business

Microsoft Teams

Microsoft Entra ID

Purview

CoPilot Studio

Power Platform

Manage hybrid identity and mail flow integrations (Azure AD Connect, hybrid Exchange).

Oversee licensing, mailbox management, distribution groups, dynamic groups, and shared resources.

Monitor tenant health, service health, and usage reporting to ensure availability and performance.

Provide Tier 3 escalation support for complex messaging, collaboration, authentication, and synchronization issues.

Identity, Security & Compliance

Manage and maintain:

Conditional Access policies

Multi-Factor Authentication (MFA) policies

Identity Protection and access governance

Role-Based Access Control (RBAC)

Partner with Security Governance and SOC teams to remediate vulnerabilities and support enterprise application reviews.

Support Microsoft 365 security and compliance capabilities including:

Microsoft Purview

Data Loss Prevention (DLP)

eDiscovery

Retention and sensitivity labelling

Microsoft Defender for Office 365

Ensure configurations align with regulatory, contractual, and enterprise security requirements.

Automation & Continuous Improvement

Develop and maintain PowerShell scripts for automation, reporting, and bulk administration.

Leverage Microsoft Graph and provided APIs.

Identify and implement process improvements to increase reliability, efficiency, and security.

Evaluate and communicate new Microsoft features and roadmap items for enterprise applicability.

Collaboration & Governance

Partner with Infrastructure, Cloud Engineering, Service Desk, Desktop Management, and Security teams to improve reliability and end-user experience.

Support cloud migration and modernization initiatives.

Contribute to governance models for Teams, SharePoint, and collaboration services.

Develop and maintain documentation, knowledge articles, and change records.

Required Qualifications

Excellent written documentation and communication skills.

Bachelor’s degree in computer science, Information Systems, or related field (or equivalent experience).

5+ years of hands-on experience administering Microsoft 365 in a medium-to-large enterprise environment.

Strong expertise in:

Exchange Online

Microsoft Teams

SharePoint Online

OneDrive

Microsoft Entra ID

Experience managing hybrid identity and directory synchronization (Azure AD Connect).

Strong understanding of:

Conditional Access

MFA

Identity governance

SMTP mail flow

SPF, DKIM, and DMARC

Proficiency with PowerShell scripting for automation and administration.

Experience troubleshooting authentication, SSO, and synchronization issues.

Must be a US Citizen.

What We’re Looking For

A proactive engineer who anticipates issues and strengthens security posture.

A collaborator who works effectively across IT and security teams.

A technically curious professional who stays current with Microsoft innovation.

A service-minded professional who improves the employee experience while protecting the enterprise.