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Sr. Systems Administrator - Federal IT Support
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CTI/ASD
Falls Church, VA (In Person)
Full-Time
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Job Description
Sr. Systems Administrator - Federal IT Support CTI/ASD Falls Church, VA Job Details Full-time 17 hours ago Qualifications Endpoint Security SSO Cloud identity and access management (IAM) Mobile device support Data storage IT user and group management Linux support Azure IaaS GPO iOS Configuration management Server backup and recovery Operating system updates Microsoft Exchange Automating deployment processes System maintenance Cisco routers/switches implementation Patch management Email configuration (technical support) Azure PaaS Remote access management Remote access software Azure AD Contingency planning Microsoft Teams SharePoint MFA SAN Network security appliance implementation Windows support Full Job Description We are currently seeking an experienced senior-level IT infrastructure professional to support a small federal agency's enterprise IT environment in Washington, DC. This is a hands-on, production-support role requiring daily administration of hybrid on-premises and cloud infrastructure with minimal supervision from federal staff. The selected candidate will be the primary IT systems resource for the agency and is expected to operate independently, manage priorities, and deliver consistent results across a diverse technology stack. The environment is a hybrid Microsoft-centric infrastructure built on Cisco networking, VMware virtualization, Microsoft Azure, and Microsoft 365 — integrated via Azure Arc and Microsoft Entra ID. The agency has fewer than 150 users and fewer than 50 servers, with remote users distributed nationally. Contingent Upon Contract Award What You'll Be Doing Day to Day Perform day-to-day administration of Windows Server 2016/2019/2022 and Linux server environments across on-premises and Microsoft Azure cloud infrastructure Administer Microsoft Entra ID and on-premises Active Directory including conditional access policies, MFA integration, GPO management, user and group provisioning, and identity lifecycle operations Administer Microsoft 365 tenant including Exchange Online, SharePoint, and Teams; manage configurations, licensing, and integration with on-premises Active Directory Install, configure, test, and maintain servers, storage arrays, and related networking equipment in both on-premises and cloud environments Implement and manage patch management operations across Windows Server, Linux, and network infrastructure; apply OS updates and firmware on servers, storage systems, and Cisco networking equipment Administer endpoint management platforms (SCCM, Intune) for software deployment, device configuration, and compliance management across workstations and mobile devices Configure and maintain server hardening baselines; administer monitoring and alerting tools to maintain infrastructure health visibility across all critical IT resources Administer VMware virtualization infrastructure and Azure Arc-integrated hybrid cloud environment Manage SAN/NAS storage infrastructure including provisioning, capacity planning, and performance monitoring Design and maintain disaster recovery strategies; plan and execute DR exercises including failover validation and backup restoration testing Administer Cisco routing, switching, firewall, and VPN infrastructure supporting agency LAN and remote access Develop PowerShell scripts and automation workflows to streamline server provisioning, patch reporting, and recurring administrative operations Develop and maintain accurate systems documentation including SOPs, architecture diagrams, and configuration runbooks Evaluate current IT systems architecture and recommend corrective actions and operational improvements to agency leadership Apply knowledge of federal IT management principles including NIST guidelines and FISMA directives in day-to-day operations Participate in project team meetings and support integration of new systems with existing IT operations Required Experience & Qualifications Minimum 6 years of continuous, hands-on IT systems administration and infrastructure engineering experience — operational production support, not architecture or governance only Demonstrated hands-on experience with VMware vSphere/vCenter in production federal or enterprise environments Windows Server administration — server builds, OS patching, configuration management, Group Policy, DNS/DHCP Linux server administration — package management, service configuration, user/group admin, shell scripting, troubleshooting Microsoft Entra ID / Active Directory — conditional access, MFA, GPO design and deployment, identity lifecycle management Microsoft 365 administration — Exchange Online, SharePoint, Teams, licensing, tenant management Microsoft Azure — IaaS/PaaS administration, Azure Arc, hybrid cloud operations Cisco networking — routers, switches, ASA/FTD firewalls, VPN, wireless Patch management — WSUS, Ivanti, RedHat Satellite or equivalent tools SAN/NAS storage administration — LUN provisioning, capacity planning, performance monitoring Disaster recovery — Veeam, SRM, or equivalent; experience executing DR exercises PowerShell scripting for automation of administrative tasks Ability to obtain and maintain a federal Public Trust suitability determination Ability to work onsite in Washington, DC Monday through Friday Preferred Qualifications Prior federal government IT support experience — familiarity with