Infrastructure Administrator Job Washington area,District of Columbia USA,IT/Tech

Provide daily administration and support for the client's Microsoft 365 environment, including Exchange Online, SharePoint Online, One Drive, Microsoft Teams, and associated services
Execute Microsoft 365 configuration changes, service requests, and user administration tasks in accordance with established procedures and ITIL 4 change management practices
Monitor Microsoft 365 service health and performance and escalation issues as appropriate
Maintain Microsoft 365 configuration documentation and update knowledge base articles
Support Microsoft 365 license management and user provisioning/deprovisioning
Assist in planning and executing Microsoft 365 service updates and feature rollouts
Support administration of Microsoft Azure Government, Entra , user and group management, role assignments, MFA, conditional access, and SSO
Support Zero Trust Architecture implementation and least-privilege access controls
Manage routine Azure Government administration, access control, and policy compliance monitoring
Support FedRAMP compliance activities
Administer Microsoft Endpoint Manager (Intune) for device enrollment, compliance policies, and application deployment
Assist with Microsoft Defender for Endpoint configurations and endpoint security incident response
Maintain endpoint configuration baselines and compliance policies aligned with NIST SP 800-53
Support patch management and software deployment for Windows endpoints
Coordinate with NOC and Service Desk teams on endpoint incidents and escalations
Administer Exchange Online, including mailbox management, distribution groups, mail flow monitoring, and basic transport rules
Assist with Microsoft Teams policies, user configuration, meeting settings, and Teams Rooms support
Support email security configurations, including anti-spam and anti-phishing policies
Diagnose and resolve routine and moderately complex Microsoft infrastructure incidents independently
Escalate complex or cross-domain incidents to the Senior Microsoft Infrastructure Administrator
Manage incident records in the Government ITSM platform
Coordinate with NOC, Service Desk, and other functional teams
Follow and contribute to troubleshooting runbooks and knowledge base articles
Ensure Microsoft infrastructure activities comply with FISMA, NIST SP 800-53, FedRAMP, and CLIENT cybersecurity policies
Handle CUI, SBU, and FOUO information according to CLIENT policies
Report suspected or confirmed security incidents

Requirements

Minimum 3–5 years of hands-on enterprise Microsoft infrastructure administration experience
Demonstrated experience administering Microsoft 365 and Microsoft Entra in a Federal or comparable enterprise environment
Experience supporting Microsoft endpoint management using Microsoft Intune
Familiarity with Zero Trust Architecture principles as applied to Microsoft platforms
Experience in a Federal or private-sector enterprise environment of comparable scale and complexity
Demonstrated ability to independently resolve routine and moderately complex Microsoft infrastructure issues
Experience with FedRAMP-authorized Microsoft services and Federal security compliance requirements
Solid proficiency in Microsoft 365 administration (Exchange Online, SharePoint, One Drive, Teams)
Solid proficiency in Microsoft Azure Government and Azure Active Directory (Entra )
Solid proficiency in Microsoft Entra identity management and conditional access
Solid proficiency in Microsoft Endpoint Manager (Intune)—device management and compliance
Solid proficiency in Microsoft Defender for Endpoint and Defender for Office 365
Solid proficiency in Exchange Online mail flow, security, and administration
Solid proficiency in role-based access control (RBAC) and least-privilege access management
Working knowledge of Zero Trust Architecture principles and OMB M-22-09
Working knowledge of NIST SP 800-53 security controls as applied to Microsoft platforms
Working knowledge of FedRAMP requirements for Microsoft Azure Government
Working knowledge of Power Shell scripting for Microsoft 365 and Azure administration
Working knowledge of ITSM platforms (e.g., Service Now)
Working knowledge of ITIL 4 change and incident management practices
Working knowledge of enterprise network fundamentals relevant to Microsoft infrastructure
Current and unexpired Microsoft Certified:
Microsoft 365 Administrator Expert (MS-102) certification required
Current and unexpired Microsoft Certified:
Azure Administrator Associate (AZ-104) certification required
Ability to obtain a Public Trust

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