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.
PRIMARY 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.
Azure and Identity Operations
- 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.
Collaboration, Messaging, and Video Services
- 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.
Monitoring, Automation, and Service Improvement
- 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.
REQUIRED QUALIFICATIONS
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
PREFERRED QUALIFICATIONS
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
If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.
Original Posting:April 24, 2026For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.
What We Do
We Are Leidos For 50 years we have been tackling some of the biggest problems that face our nation and our world. OUR MISSION Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020. Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®. Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos. Your most important work is ahead.
.png){kind=logo}
