Infrastructure Administrator

Jobtailor; Washington, Northern (District of Columbia, KY); Hybrid; USD 110,000 - 160,000; Full time

Job summary

Jobtailor is seeking a Senior Microsoft Infrastructure Administrator to support a federal-grade Microsoft 365 environment, including Exchange Online, SharePoint Online, OneDrive, and Teams. The role focuses on configuration changes, service requests, and ITIL 4 change management within a FedRAMP/NIST framework.

The ideal candidate will have hands-on experience with Microsoft Entra ID, Intune, Defender for Endpoint, and RBAC in large enterprise settings, plus a strong scripting background in

Qualifications

• Hands-on admin of Microsoft 365 workload components (Exchange Online, SharePoint, OneDrive, Teams).
• Experience administering Microsoft Entra in federal/private enterprises.
• Familiarity with Zero Trust and NIST/FedRAMP compliance requirements.

Responsibilities

• Provide daily administration and support for the client's Microsoft 365 environment.
• Execute 365 configuration changes and user administration per ITIL 4 change management.
• Monitor service health and escalation of issues as needed.
• Maintain configuration docs and knowledge base articles.
• Support license management and user provisioning/deprovisioning.
• Assist with Azure Government and Intune device management tasks.
• Support Defender for Endpoint configurations and endpoint security.

Skills

Microsoft 365 Administration

Microsoft Azure Government

Microsoft Entra ID

Intune device management

FedRAMP Compliance

Zero Trust Architecture

RBAC / Least-Privilege Access

PowerShell Scripting

ITIL 4 Change Management

ITSM (ServiceNow)

Education

MS-102: Microsoft 365 Administrator Expert

AZ-104: Azure Administrator Associate

Tools

ServiceNow ITSM

Exchange Online

SharePoint Online

OneDrive

Teams

Intune

Defender for Endpoint

Job description

• Provide daily administration and support for the client's Microsoft 365 environment, including Exchange Online, SharePoint Online, OneDrive, 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 ID, 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, OneDrive, Teams)
• Solid proficiency in Microsoft Azure Government and Azure Active Directory (Entra ID)
• 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 PowerShell scripting for Microsoft 365 and Azure administration
• Working knowledge of ITSM platforms (e.g., ServiceNow)
• 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

Core Competencies

Demonstrates extensive expertise in Microsoft 365 administration, including Exchange Online, SharePoint, OneDrive, and Teams, alongside proficiency in Microsoft Azure Government and endpoint management using Microsoft Intune. Strong understanding of compliance requirements such as FedRAMP and NIST SP 800-53, with a focus on Zero Trust Architecture principles.

Highest-signal resume keywords

• Microsoft 365 Administration
• Microsoft Azure Government
• Microsoft Endpoint Manager (Intune)
• FedRAMP Compliance
• Zero Trust Architecture

Hard Skills

• Exchange Online Administration
• SharePoint Online Management
• OneDrive Administration
• Microsoft Teams Configuration
• Microsoft Defender for Endpoint
• PowerShell Scripting
• Role-Based Access Control (RBAC)
• Conditional Access Management
• ITIL 4 Change Management
• NIST SP 800-53 Compliance

Soft Skills

• Problem Solving
• Independent Issue Resolution
• Collaboration

Certifications & Qualifications

• Microsoft Certified: Microsoft 365 Administrator Expert (MS-102)
• Microsoft Certified: Azure Administrator Associate (AZ-104)

Industry Keywords

• FedRAMP
• FISMA
• CUI
• SBU
• FOUO
• Zero Trust Architecture Principles
• OMB M-22-09

Tools & Technologies

• Microsoft 365
• Microsoft Azure
• Microsoft Intune
• ITSM Platforms (e.g., ServiceNow)
• Microsoft Defender for Office 365