Top Systems Administrator Jobs

Designs, develops, tests, implements, and maintains Linux-based systems supporting Air Force Intelligence Operations. Responsibilities include Linux administration, security hardening, patching, troubleshooting, automation, virtualization, cloud implementation, system monitoring, and customer-focused solution development across global multi-infrastructure environments.

Manage and secure DoD RHEL and VMware environments on Dell enterprise hardware. Responsibilities include server and virtualization administration, HCI optimization, DISA STIG hardening, vulnerability remediation, secure networking, identity and access management, automation, and RMF documentation. The role requires extensive DoD system administration experience, security and platform certifications, and a Secret clearance.

Provide systems administration and end-user support for Linux and Windows environments, including Windows Server 2019, Active Directory, virtualization (VMware/Red Hat), deployment/patching, backups, hardware troubleshooting/reimaging, and security monitoring using tools like Ansible, SALT, Splunk, Puppet, SolarWinds, and Nessus. Must hold active TS/SCI with polygraph and be a US citizen.

Responsible for designing, implementing, and supporting the Operational Technology infrastructure, ensuring system stability, security, and overall performance management in coordination with application support teams.

Manage and maintain school IT infrastructure and cybersecurity; administer Google Workspace and Chromebooks; provide technical support and training to faculty, staff, and students; coordinate vendors and campus systems (security cameras, access controls, telephony, HVAC controls); oversee backups, licensing, inventories, purchasing, and long-range technology planning while supporting the school's mission.

Manage and secure Microsoft cloud and on-premises infrastructure (Azure, Entra ID, Intune, M365). Provide Level 1/2 user support, endpoint and Windows administration, backups, virtualization assistance, network troubleshooting, and participate in IT projects and documentation.

Support data center infrastructure and scientific computing systems: install and manage computer and storage hardware, assist with asset management and DCIM, participate in off-hours support, and help maintain operational readiness for large-scale HPC and data-processing environments.

Manage and support hybrid Windows, macOS, Android, and iOS infrastructure for 200+ users. Administer Windows Server/Active Directory, Google Workspace, MDM, Meraki networking, AWS cloud resources, security tools, and MS SQL. Lead a five-person help desk, oversee disaster recovery, automation, vendor management, and IT documentation while responding to incidents and improving processes.

Operate, maintain, and troubleshoot enterprise/DoD VoIP telephony systems (gateways, IP phones, PRI/FXO), perform installations and IMACs, collaborate with network managers, document configurations, and respond to service requests to ensure continuous voice service.

The Systems Administrator will manage and support HPC services, system operations, and IT problem resolution for the Intelligence Community, ensuring optimal system performance and user support.

As a Systems Administrator Level 1, you will provide HPC services, troubleshoot IT systems, and support computer/network security operations.

The Systems Administrator role involves Linux system administration, configuring servers, monitoring network resources, implementing security compliance, and documenting changes to inventory.

The Systems Administrator will manage HPC services, support system transition operations, perform troubleshooting and maintenance, manage IT system configurations, and assist users with IT systems.

The IT Engineer will provide Tier II support for maintaining a large enterprise environment, troubleshoot Windows and Linux applications, and manage user experience.

As a Systems Administrator for GRVTY, you will manage Linux systems, maintain compliance, troubleshoot issues, and support cloud infrastructure, critical for national security.

The Systems Administrator supports users, manages IT infrastructure, handles hardware/software deployments, troubleshoots issues, and assists in cybersecurity incident responses.

Lead Tier-2/3 administration of mission-critical hybrid/AWS environments: design, deploy, and maintain Linux/Windows systems, automate with IaC and config management, troubleshoot IP networking, support developers/testers, produce documentation, and ensure system security and compliance.

Administer, configure, and maintain Windows and Linux systems, networks, and hardware for DoD/IC environments. Build bare-metal systems, enforce RMF security policies, monitor for intrusions, perform backups and recovery, manage authentication services, document systems, and support displays and video distribution. Support TS/SCI clearance requirements and automation/scripting tasks.

Support ARL IT by documenting and streamlining processes, updating SOPs and training materials, assisting ticket queues, and collaborating with technical teams to maintain secure, compliant computing environments.

Maintain and troubleshoot Linux-based HPC systems, cloud tooling, Kubernetes platforms, and M&S applications; execute automation and GitLab pipelines; perform backups, patches, monitoring, and system documentation; respond to outages and recommend infrastructure improvements.

Maintain and support on-premises and cloud HPC/Linux systems. Install, configure, patch, and upgrade OS, Kubernetes, and M&S applications. Develop automation (Ansible, GitLab CI/CD), troubleshoot outages and hardware/A/V issues, monitor backups, document procedures, and recommend system improvements. May supervise staff.

Maintain and improve Windows, Exchange, and SQL servers in virtualized/clustered environments. Administer Active Directory, VMware (ESX/vSphere/Horizon), enterprise storage, backups, and disaster recovery. Monitor performance, troubleshoot issues, support applications, ensure cybersecurity best practices, document systems, and collaborate with IT leadership and clinical teams across multiple locations. Participate in upgrades, DR exercises, and occasional after-hours work.

Administer and maintain enterprise servers, virtual environments, and infrastructure for a mission-critical DOD platform. Perform system administration, monitoring, patching, backups, troubleshooting, performance tuning, and documentation. Collaborate with cybersecurity, engineers, help desk, and government stakeholders. Support upgrades, disaster recovery, after-hours maintenance, and on-call duties while ensuring security and availability of systems.

Maintain and administer Windows server environments and network infrastructure across multiple offices. Responsibilities include Active Directory, Hyper-V, file and storage administration, Fortinet firewall management, MECM/SCCM deployment, PowerShell automation, system imaging, documentation, and NIST 800-171 compliance support.

Provide system administration, O&M, and security management for a complex, geographically distributed network. Install/configure applications and servers, patch and harden systems, manage virtualization, handle troubleshooting, maintain documentation, and support air-gapped enclaves and off-site locations.