Top Systems Administrator Jobs

Provide on-site systems and desktop support for Windows and Linux environments, maintain virtualization and storage, run vulnerability/compliance scans and patching, manage Active Directory and network services, automate processes with PowerShell, produce SOPs/documentation, support production/dev labs, and follow DoD security guidelines while supporting customers and ticketing requests.

Administers and maintains the Learning Management System and related training platforms. Manages course setup, enrollments, assignments, completion tracking, publishing workflows, reporting, learner support, system records, and content deployment. Supports live, virtual, and self-paced training programs, troubleshoots technology issues, maintains learning assets, and recommends process improvements. Collaborates with instructional design and cross-functional stakeholders to ensure accurate, accessible, and consistent training delivery.

Administer, monitor, troubleshoot, secure, and optimize enterprise applications and platforms supporting municipal operations. Responsibilities include system integrations, upgrades, patching, access management, documentation, performance monitoring, lifecycle management, end-user support, and collaboration with technical teams, vendors, and city departments. The role also supports compliance, data integrity, reporting, cloud modernization, and platform requirements gathering.

Leads administration, support, and continuous improvement of enterprise ALM, DevOps, software quality, and AI-powered developer platforms. Partners with engineering, cybersecurity, IT, and vendors to deliver secure, scalable services. Responsibilities include platform onboarding, automation, AI governance, usage analytics, technology evaluations, cloud migrations, integrations, roadmap leadership, troubleshooting, and enterprise modernization across global engineering organizations.

Administers Windows Server and Red Hat Enterprise Linux environments, including installation, configuration, patching, hardening, upgrades, troubleshooting, and decommissioning. Supports VMware virtualization, storage, backups, Active Directory, enterprise monitoring, disaster recovery, help desk resolution, and infrastructure modernization. Documents technical procedures, remediates vulnerabilities, and participates in after-hours Priority 1 incident response. The role requires collaboration with senior engineers to maintain secure, available, and operational mission systems.

Supports sustainment of two critical operating systems on JWICs at DIA headquarters. Responsibilities include systems administration across Red Hat Enterprise Linux environments, legacy application support with Oracle, platform security configuration, database and cloud technologies, and maintaining Java-based applications and services. The role requires Security+ certification, a TS/SCI clearance with willingness to take a CI polygraph, and eligibility for privileged user access.

Provides advanced IT support and systems administration for hardware, software, operating systems, applications, servers, and connectivity. Maintains reliable computer systems, performs upgrades, resolves technical issues, supports desktops and helpdesk operations, and implements data protection, backup, disaster recovery, and failover procedures. Coordinates with distributed IT teams and service providers while documenting solutions, training users, and providing occasional evening, weekend, and travel support.

Provides advanced onsite IT support across multiple manufacturing locations. Maintains and configures computer systems, servers, operating systems, applications, networks, backups, disaster recovery, and failover procedures. Diagnoses hardware and software issues, leads desktop and helpdesk support, deploys technical solutions, documents processes, and coordinates with other IT teams and service providers. Supports Microsoft technologies, CAD and engineering applications, virtualization, cloud platforms, and enterprise manufacturing software.

Leads day-to-day IT systems administration, infrastructure management, user support, vendor coordination, and technology improvements. Administers Microsoft environments, networks, endpoints, servers, backups, business applications, and access controls. Supports cybersecurity, CMMC Level 2, NIST SP 800-171 compliance, vulnerability response, audits, and protection of sensitive information. Provides functional IT leadership, manages priorities and vendors, supports projects and budgets, and develops procedures, documentation, and continuity practices.

Administer and secure Linux and Windows infrastructure in classified and unclassified environments. Build system images, automate provisioning and compliance, troubleshoot compute, network, storage, and virtualization platforms, and support Cisco ACI fabrics. Manage backups, physical infrastructure, incident response, and security baselines while coordinating with customers and subcontractors. The role requires active TS/SCI clearance with polygraph and full-time onsite work near College Park, Maryland.

Provide onsite and remote IT support across multiple locations, administering endpoints, identity systems, Linux environments, office infrastructure, networks, and security controls. Manage device lifecycles, user access, incidents, documentation, compliance, and automation while supporting specialized engineering environments and an on-call rotation.

Administer and govern PDM/PLM systems (Autodesk Vault, SolidWorks PDM, PTC Windchill). Ensure engineering data integrity, BOM and item/master alignment, troubleshoot multi-CAD issues, support upgrades, migrations, and governance activities, and collaborate with engineering, IT, manufacturing, and business stakeholders.

Provides executive administrative support to the Mobile Systems team, including phone coverage, calendar management, meeting coordination, document creation, filing, mail handling, supply ordering, and confidential information management. The role supports other administrative assistants, escalates issues, coordinates competing priorities, and maintains professional communication, accuracy, flexibility, and a positive attitude in a fast-paced corporate environment.

Provides primary IT support for internal users across a national organization. Manages laptops, mobile devices, networks, servers, Azure, Active Directory, Microsoft 365 applications, backups, monitoring, security, and vendor relationships. Resolves technical issues, administers accounts and permissions, maintains systems, and supports mergers and acquisitions by integrating newly acquired companies’ IT environments. Requires after-hours support and willingness to travel up to 50% within the United States.

Systems Integration Administrator responsible for administering Linux and Windows environments, integrating hardware, software, RF, and networking components, deploying mission applications, and providing Tier II/III support. Duties include virtualization, Active Directory, patching, STIG compliance, network configuration, system testing, documentation, deployment automation, and field support for Army mission systems. The role requires an active TS/SCI clearance with polygraph and a DoD 8140-compliant IAT Level II certification.

Own and optimize Zuora billing and subscription-management operations, including workflow design, financial reporting, integrations, data flows, automation, and support for product and pricing changes. Partner with technical and business stakeholders, document system architecture and processes, communicate tradeoffs, and lead continuous improvement. The role requires strong quote-to-cash, billing-system design, SaaS operations, systems-design, and business-analysis experience, with SQL and data modeling as bonuses.

Administer and optimize cloud, on-premises, SaaS, and hybrid enterprise infrastructure. Manage Windows Server, Active Directory, Microsoft Entra ID, Microsoft 365, AWS, identity, networking, security controls, patching, and monitoring. Develop automation and Infrastructure as Code using Terraform, Ansible, CloudFormation, and PowerShell. Support enterprise applications, integrations, upgrades, deployments, vendors, documentation, troubleshooting, and technical guidance for junior staff.

Provide end-user IT support and system administration for a multi-site manufacturing environment: manage Hyper-V servers, backups/DR, patching, ERP/JDE administration, printer and workstation support, documentation, compliance (CMMC), and lead local IT projects while handling helpdesk escalations and finance-related ERP support.

Administer and harden Windows and Linux systems supporting mission-critical classified workflows. Configure and maintain Atlassian tools, deploy Kubernetes and containerized workloads, and manage IPA and Active Directory identity services. Develop Bash and Python automation for operations, patching, and workflow execution. Provide Tier 2/3 support, root cause analysis, documentation, and runbook maintenance. The role also supports virtualization, VDI, infrastructure-as-code, configuration management, and security hardening.

Provides Windows systems administration and operations support across virtualized infrastructure, including Active Directory, DNS, Group Policy, Exchange, SCCM, VMware, VDI, and Windows/Linux systems. Monitors enterprise environments, manages vulnerabilities and IAVAs, deploys patches, resolves hardware and software issues, supports network and security configurations, maintains documentation, and implements IT enhancements. Requires extensive Windows administration and information security experience in a TS/SCI with Polygraph environment.

Installs, configures, upgrades, monitors, and maintains servers, computers, network infrastructure, software, and peripherals. Provides Tier 3 help desk support, manages Active Directory accounts and policies, troubleshoots technical issues, documents processes, and supports system performance and availability. Travels independently to domestic and international facilities for installations, upgrades, training, and technical support. The position is on-site in Reading, Pennsylvania, with regular weekday hours and occasional 24x7 support as needed.

Provides hands-on internal IT and helpdesk support, troubleshooting hardware, software, access, and connectivity issues. Administers Microsoft 365, Active Directory, Azure, Windows Server, networks, phone systems, and security tools. Manages equipment inventory and employee onboarding, supports automated workflows, contributes to infrastructure projects, and participates in an after-hours on-call rotation. The role is hybrid in New York City, requiring at least three office days per week.

Administer and improve core IT systems across corporate and clinical environments, including hardware, software, endpoints, servers, cloud platforms, SaaS, networks, and identity access. The role handles complex technical escalations, security and compliance configuration, automation, disaster recovery, documentation, ticket-data quality, and service improvement. It requires independent project ownership, data-informed prioritization, strong communication, and 2+ years of IT or systems administration experience.

Provides advanced support and administration across enterprise applications, infrastructure, warehouse and retail technologies, SAP integrations, security systems, cloud tools, and legacy platforms. Troubleshoots complex cross-domain incidents, supports IT projects, maintains documentation, coordinates with technical and business teams, and serves as a subject-matter escalation point. The role also assists with IT strategy, operational oversight, system enhancements, testing, vendor coordination, and continuity of mission-critical systems.

Own the company’s IT infrastructure, Microsoft cloud environment, cybersecurity, support operations, integrations, and internal tooling. Build AI-powered applications, automations, APIs, dashboards, and agents; administer networks, servers, endpoints, backups, and security systems; provide technical support; manage vendors; and lead technology adoption across the organization. This is an onsite, hands-on role in Austin focused on improving reliability, security, and operational efficiency.