Top Systems Administrator Jobs

Administer, monitor, and maintain physical and virtual servers, storage, backups and SAN. Perform OS patching, AD group policy design, SIEM and vulnerability management, incident response, vendor liaison, change management, documentation, and on-call law-enforcement IT support with required background checks and CJIS compliance.

Support users of PLM software by troubleshooting issues, managing support tickets, training users, and ensuring process adherence. Engage with teams to communicate and standardize information.

The Linux Systems Administrator is responsible for complex system analysis, maintenance, installation, and troubleshooting of enterprise servers and storage solutions. Mentoring is required for this role with significant experience in administration and support.

Manage and maintain Linux-based systems, ensuring security and stability, performing updates, troubleshooting issues, and automating tasks.

The HR Systems and Support Administrator is responsible for managing HRIS operations, data integrity, system support, and supporting payroll, benefits, and performance processes using UKG platforms.

The Linux Systems Administrator will manage and optimize Linux-based infrastructure, focusing on Red Hat, Puppet automation, and system reliability in a team-oriented environment.

Implement, configure, and support client IT solutions for SMBs including desktops, servers, Microsoft 365, virtualization, networking, and backup/DR. Execute projects, administer Windows Server and AD services, manage M365 components, troubleshoot infrastructure, produce documentation, and provide post-implementation support while collaborating with engineers and clients.

Provide hybrid on-site IT system administration: manage Google Workspace, SSO/Okta, endpoint security (CrowdStrike, Jamf/Intune), Checkpoint firewalls; handle onboarding/offboarding, workstation provisioning and troubleshooting (Windows/macOS/mobile), support IAM and security administration, assist in incident response, business continuity and disaster recovery, and maintain user and technical documentation.

Manage and optimize large-scale Ubuntu and RHEL servers, perform upgrades, patching, performance tuning, security hardening, backups and disaster recovery. Maintain configuration management and deployment pipelines (Ansible/Puppet/Terraform), monitor system health, troubleshoot OS/hardware/network issues, collaborate with DevOps/Cloud teams for provisioning, and produce documentation, SOPs, and audit reports.

The Senior Linux Systems Administrator will design, install, configure, and maintain servers, troubleshoot problems, and support large-scale applications while focusing on system integration and stability.

Coordinate IT systems and support for a hybrid workforce: manage macOS and Windows device deployments, Microsoft 365 and identity systems, monitor endpoint health, maintain office network infrastructure, own onboarding/offboarding and device inventory, automate workflows via scripting/APIs, maintain SOC 2/ISO 27001 evidence, and coordinate with Security, HR, and IT.

The role involves Unix/Linux System Administration, managing Oracle CRS, providing user support, and contributing to incident, problem, and change management processes.

The role involves managing Win server migrations, VMware infrastructure, and data backup recovery, while supporting internal networks and users.

Monitor and manage interface projects, provide troubleshooting support for Cerner applications, oversee project associates, maintain interface architecture integrity, and ensure adherence to security policies while delivering quality custom interfaces.

The role involves managing VMware and Win servers, data backup and recovery, and physical to virtual migrations, requiring extensive systems administration experience.

The IT Systems Administrator will manage on-site IT systems, troubleshoot issues, optimize network performance, and collaborate with HQ IT and international teams to ensure smooth operations.

Responsible for providing technical support and maintenance for IT infrastructure, including troubleshooting systems, networks, and applications, and ensuring security compliance.

Provide on-site IT systems and desktop support in manufacturing and office environments. Administer Windows servers, virtualization, storage, Office 365/Azure, AD/Exchange, networking, and deploy infrastructure across multiple locations. Troubleshoot hardware/software interfacing with factory equipment, script administrative tasks, document procedures, mentor staff, be on-call, and travel between Texas sites as needed.

Provide on-site IT systems and desktop support in manufacturing environments, administer Windows servers, virtualization, storage, networking, Office365/Azure, Linux and open-source stacks, deploy IT infrastructure across sites, document and train staff, be on-call and travel between Texas locations.

Manage, provision, and maintain Red Hat Enterprise Linux servers using Puppet automation. Perform monitoring, patching (Satellite/YUM), troubleshooting, IaC scripting, version control, and collaborate with teams to ensure 24/7 system reliability and documentation. Provide onsite support at Langley AFB and train teammates.

Lead and manage heterogeneous Windows and Red Hat Enterprise Linux server infrastructure and a team of system administrators. Oversee account management, maintenance, system optimization, change management, and integration with cybersecurity requirements. Coordinate technical documentation, training, and cross-program meetings. Ensure 24x7 operations, support occasional after-hours work, and travel domestically up to 10%. Obtain required DoDD 8140/8570 (CompTIA Security+ CE or equivalent) certification within six months.

Manage and maintain IBM mainframe VTS tape and SAN infrastructure, DASD replication, and backup/DR environments. Configure storage, monitor performance and capacity, troubleshoot incidents, run DR testing, collaborate with vendors, and mentor junior staff to ensure high-availability and secure backup architecture.

Administer and secure enterprise IT infrastructure (Windows and RHEL), provide Tier I-III support, manage networking, virtualization, VDI, automation, patching, user accounts, backups, and compliance with RMF/NIST/CMMC. Collaborate with security teams, perform lifecycle hardware management, and support onboarding/offboarding and disaster recovery.

Provide Tier I-III enterprise IT and systems administration including installation, maintenance, security, and support for RHEL environments, network infrastructure, VDI/virtualization, automation tools, and user account management. Ensure compliance with RMF/NIST/CMMC, perform backups/disaster recovery, asset lifecycle management, and collaborate with security personnel.

Provide front-line technology support and manage network infrastructure in a K-12 environment, including troubleshooting hardware and software issues.