Microsoft Infrastructure Administrator

Microsoft 365 and Azure Government Administrator

Location:

Remote, with occasional onsite support in Washington, DC

Position Overview:

System One IT is seeking a Microsoft 365 and Azure Government Administrator to support an enterprise federal environment. This position provides hands-on administration and operational support across Microsoft 365, Azure Government, Microsoft Entra , Exchange Online, Microsoft Teams, Intune, Defender, and related Microsoft cloud services. The Administrator will manage daily Microsoft infrastructure activities, execute approved configuration changes, resolve routine and moderately complex technical issues, and support security and compliance initiatives.

This individual should be comfortable working independently while escalating advanced or cross-platform issues to the Senior Microsoft Infrastructure Administrator when appropriate. The ideal candidate has practical experience administering Microsoft cloud technologies in a federal or similarly regulated enterprise environment and demonstrates strong technical judgment, attention to detail, and a commitment to secure infrastructure operations.

Microsoft 365 Administration

• Provide daily administration and support for Microsoft 365, including Exchange Online, SharePoint Online, One Drive, and Microsoft Teams

• Complete configuration changes, service requests, and user administration activities in accordance with established procedures and ITIL change-management practices

• Monitor Microsoft 365 service health, performance, and availability

• Maintain Microsoft 365 configuration documentation, operational procedures, and knowledge-base articles

• Support user provisioning, deprovisioning, group administration, and Microsoft 365 license management

• Assist with Microsoft 365 service updates, feature rollouts, and configuration improvements

Azure Government and Microsoft Entra

• Support the administration of Azure Government and Microsoft Entra

• Manage users, groups, enterprise applications, role assignments, and access requests

• Administer multifactor authentication, Conditional Access policies, and single sign-on configurations

• Support identity security and Zero Trust initiatives through least-privilege access controls

• Complete routine Azure Government resource, access-control, and policy-monitoring activities

• Support FedRAMP compliance activities for Azure Government services

• Coordinate with senior administrators on complex Azure Government and Entra s

Endpoint Management and Security

• Administer Microsoft Intune for device enrollment, configuration, compliance, and application deployment

• Support Microsoft Defender for Endpoint configuration and endpoint security incident response

• Apply and maintain endpoint configuration baselines and compliance policies aligned with organizational and federal security requirements

• Support Windows endpoint patching and software deployment

• Troubleshoot device enrollment, compliance, application deployment, and policy issues

• Coordinate with service desk, network, and security teams on endpoint-related incidents

Exchange Online and Microsoft Teams

• Support daily Exchange Online administration, including mailbox management, distribution groups, mail-flow monitoring, and basic transport rules

• Administer Microsoft Teams policies, user configurations, meeting settings, and governance controls

• Support anti-spam, anti-phishing, and email-security policies

• Assist with Microsoft Defender for Office 365 administration

• Coordinate with audiovisual support teams on Microsoft Teams Rooms configuration and support

• Resolve routine and moderately complex Exchange Online and Teams incidents

Security, Compliance, and Governance

• Perform Microsoft infrastructure administration in accordance with FISMA, FedRAMP, NIST SP 800-53, and organizational cybersecurity requirements

• Apply least-privilege and separation-of-duties principles to access-management activities

• Support Zero Trust Architecture initiatives across Microsoft platforms

• Assist with security assessments, audit evidence collection, and remediation activities

• Follow established procedures for handling sensitive…