Top Systems Administrator Jobs

Support a U.S. government customer handling Tier 1 help desk and Tier 2 escalations. Configure and manage UNIX/Linux and Windows systems, implement enhancements to improve reliability and performance, and use scripting to automate tasks. Maintain security posture per clearance and certification requirements.

Provide administration and support for Windows Server 2019/2022 and Windows 10/11 clients, manage AD/DNS/Certificate Authorities, administer RHEL/Amazon Linux in AWS, deploy and maintain AWS and on-prem environments, and automate provisioning and configuration using SaltStack, Ansible, Bash and Python.

As a Systems Administrator, you will design, implement, and manage secure cloud-based solutions, support AWS services, provide system administration for Windows and Linux, manage migrations, and ensure cybersecurity compliance for government systems.

The role involves managing Microsoft Azure environments, leading technical projects, collaborating with stakeholders, and conducting system health monitoring and troubleshooting.

The Intermediate Systems Administrator supports Windows domain administration, providing system maintenance, backup recovery, troubleshooting, and performance tuning in a largely self-directed role.

Design, deploy, automate, and maintain mission-critical cloud and Linux infrastructures using AWS, Kubernetes, Terraform, and Ansible. Administer enterprise IT systems, perform system installation, configuration, patching, troubleshooting, and ensure security compliance. Role requires TS/SCI with polygraph and IAT Level II or higher.

The Teamcenter Administrator manages the Teamcenter PLM system, including installation, configuration, user access, data management, system performance, and integration with other applications, while providing training and support.

Manage IT hardware and applications for corporate and remote users. Administer Office 365, Windows systems, oversee budgets, and ensure system performance. Lead projects, support internal users, and enhance technical skills.

Build and maintain AWS infrastructure for PLM platforms (Teamcenter, Windchill); implement IaC and automation (Terraform/Ansible/CloudFormation); manage databases, security, monitoring, backups, and environment provisioning; collaborate with engineers and maintain runbooks and operational documentation.

Administer, maintain, secure, and optimize government enterprise server, virtualization, storage, and cloud environments. Perform patching, backup/recovery, Active Directory and Microsoft 365 administration, monitoring, and cybersecurity compliance. Support DR/business continuity, documentation, and cross-team troubleshooting to ensure mission-critical system availability.

Provide senior-level systems administration for Army Intelligence systems: install, configure, maintain Windows and UNIX servers, Azure/AAD environments, backups, storage and network components; troubleshoot Tier 1/2 issues, manage infrastructure, integrate new technologies, supervise personnel, and support escalation and mission operations on-site.

Provide Windows systems administration for an enterprise government environment: install, configure, patch, and maintain Windows Server 2016 and Windows 10, SCCM patching, Active Directory, SQL Server, Nutanix virtual servers, backup solutions, and documentation. Interface with clients, follow security mitigations, and support datacenter projects and change control.

Support, maintain, grow and optimize RedHat 6.x and CentOS systems. Provide enterprise infrastructure support (email, voice/data, Windows servers, virtualization, storage). Perform application deployments/upgrades, ensure availability via monitoring and disaster recovery, act as second-tier Service Desk support, and participate in 24/7 on-call rotation.

Support, maintain, optimize RedHat/CentOS systems and enterprise infrastructure (Windows, virtualization, storage, SAN). Perform application deployments, monitoring, disaster recovery, provide second-tier support to Service Desk, and participate in 24/7 on-call rotation.

Maintain, support, and optimize RedHat/CentOS Linux systems and enterprise infrastructure. Provide application deployments, upgrades, virtualization and storage support, second-tier Service Desk escalation, disaster recovery, and participate in 24/7 on-call rotation.

Designs, implements, administers, and secures enterprise network and server infrastructure. Manages Cisco networking, Windows Server environments, virtualization (VMware/Hyper-V), Microsoft 365/Exchange, backups, and security tooling. Leads projects, mentors junior staff, supports disaster recovery, and responds to incidents while ensuring regulatory compliance and high availability.

Administer and maintain company IT systems and servers, troubleshoot technical issues, apply patches and updates, manage backups and security configurations, document procedures, and provide system support to users to ensure reliable operations.

Provide DevOps systems administration for Windows-based AWS hosting (IIS, RDS, WordPress): automate builds and configuration, perform migrations and patching, troubleshoot issues, monitor reliability, manage configuration, and maintain technical documentation.

Provide foundational enterprise systems support: install, configure, monitor, patch, and troubleshoot Windows/Linux servers, AD, Exchange/Office365, VMware, storage, backups, and email security. Assist with onboarding/offboarding, runbooks, change management, and collaboration with network, security, database, and application teams under senior guidance.

Manage and support enterprise Windows, Linux, and UNIX systems, virtualized and cloud-hosted infrastructure (C2E). Ensure system reliability, security, configuration compliance, troubleshooting, documentation, and collaborate with stakeholders on projects and integrations.

Administer and maintain Windows (and some Linux) servers and infrastructure, perform patching, backups, system upgrades, hypervisor management, hardening, and troubleshooting. Support cybersecurity analysis by collaborating with security analysts and network engineers, leveraging scripting/automation, and ensuring operational compliance and optimal system performance.

Provide Windows-centric systems administration (with some Linux) including installs, configuration, patching, backups, hardening, upgrades, and infrastructure monitoring. Troubleshoot complex issues, support security analysis and audit log review, collaborate with security analysts and network engineers, and maintain operational compliance and documentation in a fast-paced, mission-driven environment.

Provide Windows and Linux systems administration across on‑premises and virtual environments supporting law enforcement missions. Perform AD and core services administration, OS patching, backups, monitoring, incident troubleshooting, security hardening, and assist with upgrades, migrations, and disaster recovery while maintaining compliance and documentation.

Provide first-level technical support for end users: triage and resolve tickets via phone/email, troubleshoot Microsoft desktops/servers and Office, perform remote installs/configuration/backups, document resolutions, escalate when needed, participate in on-call rotation, and contribute to preventative resources and user satisfaction.

Support, administer, and secure Windows/Linux servers, virtualization, storage, and network infrastructure for mission-critical launch range operations. Provide sysadmin tasks (patching, backups, AD, troubleshooting), support LAN/WAN and telecommunications, and lead cybersecurity activities including vulnerability mitigation, intrusion detection, and compliance. Mentor junior staff and coordinate technical efforts to maintain reliable, secure IT systems.