Top Systems Administrator Jobs

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.

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.

Administer and maintain automated and computerized systems across cGMP biopharmaceutical manufacturing: manage configurations, access, backups, integrations (LIMS/Historian), change control, validation (SAT/FAT), documentation, investigations, end-user support, and continuous improvement to ensure systems remain qualified and compliant throughout their lifecycle.

The Senior Systems Administrator leads the design, implementation, and maintenance of IT infrastructure, ensuring security and scalability. Responsibilities include system upgrades, technical support, mentoring staff, and managing enterprise IT environments.

As a Cyber Security Specialist or Systems Administrator, you'll support enterprise information systems, oversee security protocols, monitor vulnerabilities, and maintain user accounts in a collaborative team environment.

Manage, secure, and maintain enterprise VMware virtual infrastructure and Windows Server services for DoD missions. Design and deploy clusters, storage, networking, and hardened STIG-compliant configurations. Collaborate with systems, network, and cyber teams to troubleshoot, audit, and ensure high availability, performance tuning, and regulatory compliance for critical government environments.

Provide regional IT support by troubleshooting and maintaining servers, networks, desktops, laptops, printers and telephony. Own help-desk tickets, document changes, assist with major system implementations, mentor junior technicians, and travel periodically to regional facilities to perform maintenance and projects.

Provide Linux and Windows server administration, VMware and NAS (NetApp) management, support backup/recovery, security auditing and hardening, assist Cyber Security, and perform system monitoring, patching, and user/account management for classified government environments.

Provide Windows systems administration and IT support across servers, AD, Office 365, VMware, Veeam backups and AWS. Troubleshoot, patch, document procedures, perform assessments, collaborate with vendors, and maintain compliance with FFIEC. Occasional off-hours work and physical handling of equipment required.

Lead administration and support of multi-vendor enterprise storage arrays (Dell, HP), ensure secure storage operations, perform SAN zoning, LUN provisioning, backups/restores, migrations, firmware/patch maintenance, and on-call/after-hours maintenance while collaborating with security, engineering, and customers to maintain operational excellence.

Administer Windows and macOS systems, identity platforms, networks, endpoints, NAS storage, cloud services, and creative production infrastructure. Provide Tier 1 and Tier 2 support, manage onboarding and offboarding, troubleshoot Adobe and 3D production tools, maintain documentation and inventory, monitor system health, and support workstation, server, and software deployments. The role is fully onsite in Culver City, with occasional weekend maintenance and after-hours support responsibilities.

Install, maintain, secure, and tune servers; perform patching, backups, volume/partition management, and hardware/OS maintenance. Work with Systems Management lead on capacity planning and disaster recovery. Support IIS and business services, SAN storage, VMware virtualization, ASA firewall, Active Directory and Group Policy administration.

Tier 2 Application Systems Administrator providing advanced Help Desk support: administer user accounts and access (AIMS/PAS), manage MFA soft/hard tokens, triage incidents, coordinate service restoration, monitor SLAs and reporting, troubleshoot applications and system issues, document ticketing activities, and support English/Spanish operations.

Provide Tier 2 desktop and on-site systems support: troubleshoot hardware, network, and peripheral issues; perform PC imaging and maintenance; manage Active Directory objects; install/replace end-user hardware; maintain Windows OS and related applications to ensure stable performance.

Provides Tier 2 technical support for internal users and managed services clients. Responsibilities include resolving escalated tickets, troubleshooting Windows, macOS, Microsoft 365, identity, networking, servers, mobile devices, meeting-room technology, and specialized IP-based systems. The role monitors alerts, coordinates vendors and escalations, maintains ticket documentation, contributes to knowledge resources, delivers customer service, and participates in on-call rotations.