Top Systems Administrator Jobs

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.

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.

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

The IT Systems Administrator manages Centri's technology ecosystem, ensuring security and performance across Microsoft 365 and Azure environments, and integrates automation tools. Responsibilities include security management, enterprise application support, and optimizing system performance.

As an IT Systems Administrator Intern, you will provide Helpdesk support, manage user onboarding, assist in troubleshooting, and collaborate with full-time administrators on infrastructure projects.

This role supports ERP systems by providing technical assistance, coordinating IT projects, and managing communications across IT departments and remote offices.

Provide senior-level Linux system administration and lab operations for HPE HPC & AI performance engineering labs. Tasks include imaging/configuring servers, firmware and switch management, virtualization and high-performance storage (e.g., Lustre), GPU/CPU hardware diagnostics, job-scheduler administration, capacity planning, lab design, and mentoring junior staff while ensuring cybersecurity and operational stability for internal and customer-facing workloads.

The IT Systems & Data Engineer will design and maintain data pipelines, support infrastructure, manage integrations, and collaborate on IT projects.

Responsible for designing, implementing, optimizing, and maintaining databases supporting network management systems while ensuring high performance, availability, and security.

The IT Systems Administrator at AstroForge will build and maintain internal tech infrastructure, support users, manage network and security compliance, and handle hardware lifecycle management.