Top Systems Administrator Jobs

Provide Tier 2/3 systems administration for federal systems: manage servers, domain controllers, Group Policy, certificates, VMware, Azure, VPNs, patching, vulnerability scanning, and SOPs. Support data center and network infrastructure, create systems engineering documents, troubleshoot issues, and perform onsite maintenance twice weekly in Silver Spring, MD.

Lead administration and support for NetSuite and adjacent enterprise systems. Manage user access, troubleshoot production issues, monitor integrations, perform configuration and minor enhancements, support financial and supply chain cycles, own release and change management, drive automation and process improvement, support audits and SOX controls, and partner with business stakeholders for UAT, training, and governance.

Senior Systems Administrator responsible for administering Windows and RHEL servers, VMware/VCF, enterprise storage and backup/DR, patch management, AD/DNS/DHCP, Citrix, and enterprise monitoring. Provides advanced troubleshooting, documentation, technical leadership, modernization support, CCB participation, and on-call/after-hours support (2-hour response). Requires active TS/SCI w/ CI Poly and DoD 8140/8570-compliant certification.

Administer and maintain Windows and Red Hat Enterprise Linux servers, VMware virtualization, enterprise storage and backups. Perform patching, vulnerability remediation, AD/DNS/DHCP/Group Policy management, monitoring (SolarWinds), documentation, help-desk support, disaster recovery, and participate in modernization and on-call Priority 1 incident response.

Provide implementation, troubleshooting, and maintenance of IT systems; manage daily configuration and operations for servers, storage, network, and mobile devices; deliver Tier 1/2 support and escalations; configure Linux/Unix/Windows OS; optimize capacity and performance; support dispatch systems and mission architecture; analyze complex hardware/software integration and communicate status to management.

Provide implementation, troubleshooting, maintenance, and daily operations for IT systems. Manage configuration and operation of client/server, storage, network, and mobile devices. Deliver Tier 1 and Tier 2 help desk support, escalate and communicate status to management, and configure Linux, Unix, and Windows operating systems to improve reliability and performance.

Provide implementation, troubleshooting, maintenance, and day-to-day operations for IT systems. Deliver Tier 1 and Tier 2 support, monitor client/server/storage/network and mobile devices, manage escalations and dispatch hardware issues, perform capacity planning and system optimization, and configure Linux, Unix, and Windows operating systems to improve reliability and performance.

Lead administration and sustainment of Windows and UNIX/Linux systems in a secure DoD environment. Manage RMF/ATO efforts, STIG compliance, vulnerability remediation (ACAS), patching, configuration management, CCB/change control, and enterprise infrastructure. Prepare RMF accreditation packages, support audits and continuous monitoring, mentor junior staff, and coordinate with IA personnel and government stakeholders.

Provide onsite Microsoft infrastructure and cloud support: manage Active Directory/Entra ID, Microsoft 365 services, Intune endpoint lifecycle, Azure monitoring, identity and access (MFA/Conditional Access), troubleshoot authentication and endpoint issues, maintain documentation, and coordinate vendors and stakeholders.

Provide day-to-day HRIS support including system configuration, data audits, testing, troubleshooting, reporting, and implementing process improvements for Oracle Cloud HCM and related HR systems.

Administer and maintain Veritas NetBackup infrastructure, configure and troubleshoot backup/restore operations, create backup policies and retention lifecycles, monitor/report backup performance, coordinate with infrastructure/storage/database/application teams, and maintain documentation and compliance (DISA STIGs) for a high-security cloud migration.

Manage AD provisioning and Office/Microsoft 365 administration, patching and Intune/MECM endpoint management, ATP monitoring, Tier 2 support, print/fax and physical security systems administration, PowerShell scripting (including MS SQL integration), and vendor coordination to maintain agency IT operations and security.

Serve as the senior technical resource owning reliability, security, and lifecycle of on-premises and cloud Microsoft infrastructure. Design, maintain, patch, document, and automate systems (PowerShell, Graph API, IaC). Lead projects, respond to escalations, manage backups and DR, follow change management, provide after-hours support, and mentor teammates.

Lead design, deployment, and optimization of mission-critical systems; enforce security protocols; perform expert troubleshooting, system upgrades, testing, documentation, and data handling to support DoD/Defense operations and OCONUS deployments.

Provide Windows-centric systems administration in a heterogeneous environment: manage servers, storage, file services, access, backups, patching, and workstation support. Troubleshoot OS/hardware integrations, work with cybersecurity to meet STIG/SCAP requirements, perform disaster recovery tasks, and support engineers. Must meet DoD certification and clearance requirements.

Manage and scale on-premise and cloud infrastructure supporting engineering, manufacturing, and secure programs. Administer Windows and Linux servers, Proxmox virtualization, Microsoft 365 services, networking, backups/DR, monitoring, and CMMC Level 2 security efforts. Automate tasks with PowerShell or Bash and support incident response and system availability.

Maintain and operate multi-user computer systems: create/administer accounts, install system software, tune performance, allocate storage, perform backup/recovery, document systems, coordinate with network engineers, and develop/monitor usage policies and standards.

The Senior Information Systems Administrator will manage system security, support RMF in classified environments, and oversee server and network administration, ensuring cyber security for space-based information systems.

The Systems Administrator supports IT systems by managing configurations, troubleshooting, and providing Help Desk services while ensuring system performance.

Provide escalated remote network and server troubleshooting, implement projects, integrate security technologies, document and follow up with customers, and participate in weekend on-call rotation. Support Office 365/Azure/cloud environments and use Automate for managed services tasks.

The role requires advanced skills in systems administration and technical support for mainframe operations, including expertise in storage management and monitoring systems.

Assist in maintaining legacy applications and transitioning to a new system architecture, with a focus on DevOps practices.

Administer and maintain z/OS mainframe systems: install and patch systems software via SMP/E, program mainframe routines, provide technical support and debugging, adjust OS settings for performance, and help define standards and best practices. Lead or coordinate team projects and occasionally work outside normal hours.

As a Systems Administrator, you will consult clients on IT needs, manage infrastructure projects, support various systems, and maintain client relationships.

The Financial Systems Analyst will manage financial systems, lead upgrades, automate workflows, and provide technical support to ensure data accuracy and system integrity.