Microsoft System Administrator - Mid

Leidos

1d•Onsite

About The Position

The Microsoft System Administrator-Mid provides administration and operational support for Microsoft platforms that are directly in scope for the SEC ISS contract, including Microsoft 365 GCC/GCC G5 and Microsoft Azure services. This role maintains secure, reliable, and compliant service delivery across Windows Server, Active Directory/Azure Active Directory, Exchange Online, SharePoint Online, and Teams environments. The position delivers Tier 1/2/3 incident, request, and maintenance support to sustain SEC collaboration and enterprise productivity services through proactive monitoring and system upkeep. The administrator also supports Teams-based conferencing, Teams/Webex interoperability, and live streaming operations for mission-critical events while coordinating with ISS teams to meet SLA and operational objectives.

Requirements

This position is restricted to U.S. citizens only. Applicants must not hold dual citizenship with any other country to be eligible for work under this contract.
The ability to obtain and maintain SEC Public Trust (or higher if required).
Bachelor's degree in a relevant field (e.g., Information Technology, Computer Science, Engineering).
4+ years of experience in system administration with a focus on Microsoft technologies.
Strong experience administering Windows Server, Active Directory, Group Policy, and Microsoft 365 environments.
Demonstrated experience supporting Exchange Online, SharePoint Online, and Microsoft Teams in an enterprise environment.
Hands-on experience supporting Azure services, including Azure Active Directory, virtual machines, storage, and networking.
Experience supporting Microsoft Teams conferencing and video streaming operations for enterprise events.
Windows Server administration
Active Directory/Azure Active Directory and Group Policy management
Microsoft 365 administration (Exchange Online, SharePoint Online, Teams)
Microsoft Azure administration (virtual machines, storage, networking)
PowerShell scripting and task automation
Monitoring, incident troubleshooting, and root-cause analysis
Security policy enforcement and permissions management
Teams conferencing, Webex interoperability support, and live streaming operations

Nice To Haves

Experience supporting Microsoft 365 GCC G5 environments in a federal or similarly regulated organization.
Experience implementing Entra ID Governance, Conditional Access, PIM, and lifecycle access reviews at enterprise scale.
Experience with Azure Monitor, Log Analytics, and Application Insights for operational visibility and performance optimization.
Experience with ITIL-aligned incident/problem management and ServiceNow-based service operations.
Experience supporting high-visibility live collaboration events (e.g., town halls, executive briefings, commission-style meetings).
Microsoft Certified: Azure Administrator Associate (AZ-104)
Microsoft 365 Certified: Administrator Expert (MS-102)
ITIL 4 Foundation

Responsibilities

Microsoft Platform Administration.
Administer and maintain Windows Server, Active Directory, Group Policy, and Microsoft 365 GCC services in accordance with SEC operational standards.
Provide Tier 1/2/3 operational support for Microsoft 365 GCC/GCC G5 collaboration and productivity services, including incident response, service requests, and escalation.
Manage user accounts, permissions, and security policies across Active Directory/Azure Active Directory, Exchange Online, SharePoint Online, and Teams.
Perform configuration, patching, and maintenance activities to preserve system stability, security posture, and service continuity.
May require participation in on-call or surge support activities depending on operational needs.
Configure and maintain Azure resources, including virtual machines, storage accounts, and virtual networking components.
Administer Azure Active Directory identity services and access controls to support compliance and system integrity.
Monitor Azure health, availability, and performance, and implement improvements for reliability and compliance.
Support implementation and enforcement of security policies and standards across Microsoft and Azure environments.
Support day-to-day operations for Exchange Online, SharePoint Online, Teams, and related Microsoft collaboration services.
Support Teams Live Events, enterprise webcasts, conference services, and Teams/Webex interoperability scenarios to ensure reliable video/audio delivery and rapid issue resolution.
Coordinate AV/VTC and collaboration support with cross-functional ISS teams and external vendors for high-visibility meetings and broadcasts.
Communicate service status, planned changes, and restoration updates to stakeholders and end users.
Develop and maintain PowerShell automation scripts for recurring administration, maintenance, and reporting tasks.
Perform proactive monitoring, alert triage, and trend analysis to reduce outages and minimize user impact.
Troubleshoot and resolve incidents affecting messaging, collaboration tools, and enterprise Microsoft applications; escalate complex issues as needed.
Maintain SOPs, runbooks, and technical documentation, and support continuous improvement initiatives aligned to SLA performance, automation goals, and secure operations expectations.