Top Systems Administrator Jobs

Leads administration and support for VMware, storage, appliance-based, Windows, and Linux systems. Responsibilities include installation, configuration, monitoring, patching, hardening, backup and restore operations, change management, hardware troubleshooting, compliance audits, vendor coordination, inventory management, and incident-response support. Provides escalated end-user assistance, develops operational procedures, evaluates server upgrades, and participates in rotational on-call support.

Lead administration and support for VMware, storage, appliance-based, Windows, and Linux systems. Manage installations, monitoring, patching, hardening, backups, restores, security support, change management, hardware troubleshooting, compliance audits, inventory, and vendor coordination. Provide expert end-user assistance, develop standard procedures, assess infrastructure upgrades, and participate in incident response. The role requires U.S. citizenship, Public Trust eligibility, extensive systems experience, and rotational on-call support.

Administer and engineer physical and virtual infrastructure for a NAVAIR government hosting facility. Responsibilities include deploying servers, virtual machines, containers, software, backups, networking, and user accounts; troubleshooting hardware and software; maintaining documentation and disaster recovery; supporting customers; and securing systems through RMF compliance, STIG execution, continuous monitoring, and security reporting. The role also participates in Agile project planning and maintains Linux-based and virtual networking environments.

Administer and troubleshoot enterprise servers, network switches, LAN/WAN systems, and VMware environments. Manage Windows Server, Active Directory, DNS, DHCP, virtualization, patching, system hardening, vulnerability remediation, access controls, backups, and disaster recovery. Support firewalls, VPNs, endpoint protection, monitoring, audits, and security assessments while documenting infrastructure and resolving outages. The role requires on-site work, an active Top Secret clearance with SCI eligibility, and CompTIA Security+ certification.

Manages the lifecycle of MD 9 systems and servers, including installation, updates, troubleshooting, policy implementation, resource management, vulnerability scanning, patching, and STIG/SRG application. Develops standard operating procedures and performs vulnerability remediation in classified environments. Requires DoD 8140 Systems Administrator work role 451 qualification at the Intermediate proficiency level and TS/SCI clearance.

Supports FBI technology programs by administering Active Directory, Group Policy, networks, user configurations, and virtualized infrastructure. Installs and maintains network components, develops scripted management tools using PowerShell or Ansible, troubleshoots network issues, and supports system recovery. Collaborates with IT security and infrastructure teams to deploy secure solutions, recommends system changes, and communicates technical solutions to customers and stakeholders.

Supports Linux and Windows infrastructure, virtual machines, storage, backups, patching, system hardening, monitoring, incident response, and end-user support. Performs troubleshooting, maintenance, change management, hardware coordination, documentation, inventory management, and ticket resolution. Collaborates with cybersecurity teams and vendors while supporting cloud, virtualized, and on-premises environments. Rotational on-call participation, equipment handling, U.S. citizenship, and customer site badging are required.

Administers, sustains, monitors, secures, and optimizes cloud and on-premises Windows infrastructure supporting development, testing, and production environments. Responsibilities include performance tuning, resource monitoring, software and hardware evaluation, outage communications, customer and vendor coordination, status reporting, and cybersecurity vulnerability mitigation. The role supports mission systems and applications for a DoD agency.

Lead administration and support for VMware, storage, appliance-based, and server systems. Manage installations, monitoring, patching, hardening, backups, restores, compliance audits, inventory, change management, hardware troubleshooting, and vendor coordination. Support cybersecurity incident response and escalated end-user issues, develop operating procedures, and provide rotational after-hours and weekend on-call support.

Lead systems administration for VMware, storage, appliance-based, and server environments. Responsibilities include installation, monitoring, patching, security hardening, backup and restore operations, change management, hardware troubleshooting, compliance audits, inventory management, vendor coordination, and escalated end-user support. Provide on-call coverage and assist cybersecurity specialists with incident response. Support Windows and Linux platforms, identity services, networking services, monitoring tools, and enterprise backup infrastructure.

Supports Linux and Windows infrastructure, virtual machines, storage, backups, cloud environments, patching, system hardening, monitoring, incident response, and end-user support. Performs troubleshooting, change management, hardware coordination, backup restoration, inventory maintenance, documentation, and ticket management. Collaborates with cybersecurity teams and vendors while participating in rotational on-call coverage.

Supports Linux and Windows infrastructure, virtual machines, storage, backups, cloud environments, patching, monitoring, system hardening, and incident response. Troubleshoots hardware and software, manages tickets and changes, assists with backup restores and deployments, coordinates vendors, and maintains system documentation, inventories, and operational procedures. The role includes rotational on-call support and escalated end-user assistance.

Supports Linux and Windows operating systems, virtual machines, storage, backups, and cloud environments. Responsibilities include troubleshooting, patching, system hardening, monitoring, change management, backup restoration, hardware maintenance, incident response support, end-user escalation, vendor coordination, ticket management, and technical documentation. The role also assists with infrastructure deployments, inventory maintenance, and cybersecurity compliance while participating in rotational on-call support.

Provides DoD-wide application and systems support, including user account administration, troubleshooting, ticket management, escalation, migrations, documentation, and coordination with government and higher-tier administrators. Supports contract-writing and business applications, maintains SOPs and knowledge bases, tracks support metrics, and identifies recurring workflow issues. Requires U.S. citizenship, Secret clearance eligibility or higher, and at least five years of relevant experience.

Provides on-site end-user and systems administration support at Scott Air Force Base. Responsibilities include workstation setup and relocation, peripheral and printer troubleshooting, desk-to-switch connectivity troubleshooting, ticket documentation, testing, escalation, and coordination with DoD application administrators and DISA support teams. The role requires Windows, enterprise hardware, network connectivity, and ticketing experience, along with U.S. citizenship and Secret clearance eligibility.

Manage and optimize Paycom, Workday, and other People systems; ensure data integrity across payroll, benefits, time tracking, and performance systems; build reports and dashboards; lead automation initiatives; support employee lifecycle workflows, compliance, background checks, records management, employee inquiries, vendor coordination, and People Operations projects.

Administer and maintain Windows and Linux servers, network infrastructure, cloud, physical, and virtualized environments. Configure VMware, KVM, and Xen platforms; monitor performance; troubleshoot system and network issues; support upgrades and maintenance; maintain documentation; and coordinate with internal teams. The role requires a bachelor's degree or equivalent experience, at least two years of computer systems experience, DoDM 8140.03 IAT II compliance, and a Secret clearance.

Integrate, configure, test, operate, and reset virtual and physical environments. Deploy and maintain servers, workstations, and processor-controlled devices while supporting unified system integration. Manage network, cloud, virtual, and bare-metal infrastructure, including monitoring, Windows and Linux administration, automation, and configuration management. Support Information Assurance compliance and identify and mitigate network vulnerabilities across defense training environments.

Supports the operation, performance, and reliability of high-performance computing environments. Responsibilities include Linux and Unix administration, enterprise storage support, file system and software management, infrastructure monitoring, Tier 1 and Tier 2 troubleshooting, TCP/IP and high-speed networking support, Bash automation, software compilation, performance optimization, capacity planning, documentation, and collaboration with engineering teams.

Administer and sustain Linux and Unix systems across high-performance computing environments. Responsibilities include operating system installation and upgrades, file system and software management, monitoring, troubleshooting, Bash automation, networking and storage support, performance optimization, capacity planning, incident response, documentation, and Tier 1/2 user support. The role requires collaboration with government and technical stakeholders, adherence to change-management procedures, and active Top Secret/SCI clearance with full-scope polygraph.

Provides IT systems administration, audiovisual production, and escalated service desk support at an on-site headquarters. Responsibilities include managing Microsoft Teams GCC High, running live events, troubleshooting conference room equipment, building scripting and chatbot automations, improving ITSM workflows, integrating systems through APIs, resolving complex tickets, and documenting solutions. Requires strong AV, systems administration, scripting, ITSM, communication, and hardware-handling skills, with some travel and ITAR eligibility.

Administer and monitor cloud-based systems supporting intelligence missions. Responsibilities include maintaining Hadoop and Accumulo clusters, Linux administration, scripting with Bash or Python, patching, upgrades, configuration management, storage and access control, troubleshooting outages, and supporting system security. The role requires collaboration with infrastructure teams and participation in on-call support.

Provides Tier 1 and Tier 2 help desk support, system administration, troubleshooting, account and access management, patching, equipment deployment, monitoring, backups, and onboarding/offboarding. The role documents incidents, supports security and accreditation compliance, maintains Windows and Linux environments, and escalates complex issues. It requires an active TS/SCI clearance, technical certification, operating-system and Active Directory knowledge, and strong customer service skills.

Manage and support on-premises Microsoft Exchange, Proofpoint, Windows Active Directory, DNS, DHCP, and VMware environments. Responsibilities include system monitoring, patching, backup and recovery testing, email retention, security hardening, virtualization architecture, hardware refreshes, performance optimization, migrations, automation, documentation, and after-hours support. The role requires onsite orientation and ongoing hybrid work in Boston.

Supports enterprise network and endpoint infrastructure across Cisco switching, VDI, thin clients, Windows systems, PXE deployment, patching, vulnerability remediation, and Active Directory. Performs network and desktop troubleshooting, endpoint lifecycle management, STIG compliance, ticket handling, documentation, and customer support. Requires active TS/SCI clearance with current polygraph, system administration experience, classified VDI administration, Windows expertise, endpoint management, and familiarity with networking and security tools.