Top Systems Administrator Jobs

Provide escalated remote network and server troubleshooting, implement projects, integrate security technologies, document and follow up with customers, and participate in weekend on-call rotation. Support Office 365/Azure/cloud environments and use Automate for managed services tasks.

The role requires advanced skills in systems administration and technical support for mainframe operations, including expertise in storage management and monitoring systems.

Assist in maintaining legacy applications and transitioning to a new system architecture, with a focus on DevOps practices.

Administer and maintain z/OS mainframe systems: install and patch systems software via SMP/E, program mainframe routines, provide technical support and debugging, adjust OS settings for performance, and help define standards and best practices. Lead or coordinate team projects and occasionally work outside normal hours.

As a Systems Administrator, you will consult clients on IT needs, manage infrastructure projects, support various systems, and maintain client relationships.

The Financial Systems Analyst will manage financial systems, lead upgrades, automate workflows, and provide technical support to ensure data accuracy and system integrity.

Lead systems engineering activities for Navy Training Command, overseeing simulations, requirements analysis, technical documentation, and multi-site operations.

Seeking a skilled Linux administrator for cloud infrastructure and system support. Responsibilities include managing cloud resources, troubleshooting networks, and supporting Linux systems.

Administer and sustain large-scale Linux clusters, including software installation, configuration, monitoring, troubleshooting, security compliance, and performance enhancements. Manage compute, network, memory, and storage components; configure VMware virtualization environments; automate infrastructure using SaltStack and Ansible; support containerization; and use tools such as Red Hat Satellite, Splunk, HPE OneView, and Nagios. The role requires an active TS/SCI with polygraph, Security+, extensive systems administration experience, and a technical bachelor’s degree or equivalent experience.

Administer domain identity, endpoints, workstations, operating system deployments, patching, imaging, lab refreshes, printers, network-connected devices, ticketing, and inventory systems. Troubleshoot hardware and software during engineering integration and testing events, support cybersecurity compliance, document procedures, train technicians and lab users, and collaborate with multidisciplinary NASA engineering teams onsite at Johnson Space Center.

Lead vulnerability remediation and system hardening in a Windows environment, collaborating with INFOSEC. Manage Group Policy, compliance activities, and Windows updates while supporting system accreditation efforts.

Maintain and secure Windows server and workstation environments, manage LAN and backups, support document/configuration management, design web pages, track hardware, perform system upgrades, and provide operational status and user training with minimal supervision.

On-site IT generalist responsible for endpoint and identity management, network and server support, user support and onboarding, MDM/RMM administration, scripting automation, asset inventory, and coordinating with central IT while maintaining OT/IT segmentation for a regulated pharmaceutical facility.

Lead design and operation of secure CI/CD and DevSecOps infrastructure for cloud and edge deployments. Manage enclave patching, STIG compliance, vulnerability scanning, sandbox provisioning, CUI lab support, and integration of data pipelines for AI/ML and API releases.

Administer and support enterprise content management applications, manage configuration and access controls, install upgrades and patches, troubleshoot operational issues with vendors and development teams, ensure performance and availability, document processes, and lead platform improvement and integration projects.

On-site systems administrator for a classified government contract managing Windows/VMware and Red Hat/Linux environments. Duties include system install/patching, backup/recovery, account and permission management, security audit/logging, configuration management, troubleshooting, vendor coordination, documentation, and adherence to strict information systems security controls. Travel up to 25% and 12-hour shift work required.

Senior-level systems administrator for a classified government contract. Manage Windows/VMware and Linux/Red Hat servers, domain architecture, backups, security auditing, patches, account and permission management, and vendor coordination. Ensure compliance with government security frameworks, prepare security documentation, troubleshoot systems, and support 12-hour on-site shifts with up to 25% travel.

Leads and supports mainframe and enterprise database administration, including DB2, IMS, ADABAS, Oracle, MySQL, PostgreSQL, and SQL Server environments. Responsibilities include database upgrades, migrations, installations, performance and capacity monitoring, backup and recovery, replication, partitioning, cloud database transfers, ETL troubleshooting, and production support. The role also provides database design recommendations, develops scripts and procedures, and consults with application development and operations teams.

Installs, configures, monitors, secures, backs up, patches, and troubleshoots servers, systems, hardware, software, and infrastructure. Supports client requests, manages user accounts, maintains procedures and standards, performs performance tuning and capacity reporting, monitors data center equipment, handles recovery from failures, and participates in an on-call rotation. The role is fully on-site in Dunedin, Florida and emphasizes technical problem-solving and customer service.

Maintain and improve the Integrated Management System (ISO 9001/14001/45001/50001), manage document control, coordinate audits, track nonconformances and CAPAs, produce IMS data/KPIs and dashboards, support cross-functional process alignment, training, and continuous improvement to sustain certification and compliance.

Provide day-to-day system administration for a large-scale FAA environment including Linux/Unix/Windows/Solaris/VMWare support, troubleshooting, monitoring, patching, backups, configuration management, documentation, stakeholder support, and on-call/disaster recovery operations.

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.

Administer and support Oracle Fusion ERP and EPM for Accounting and Finance: manage security, integrations, reporting, GL structures, automated processes, SmartView connectivity, AP/ACH support, year-end and regulatory filing support, documentation, end-user training, and coordination with vendors/Oracle.

Administer, configure, monitor, and troubleshoot enterprise Unified Communications platforms (Avaya, Cisco, Teams). Ensure SLA compliance, support Microsoft Teams migration, analyze performance metrics, coordinate vendors, maintain documentation, and uphold security and operational requirements.

Provide on-site Tier 1–2 system and desktop support for Windows 11 and Server 2019 environments, manage Active Directory and Group Policy, maintain SIPR/NIPR compliance (STIG/DISA), perform patching, backup/recovery, asset management, document issues, and escalate Tier 3 problems while supporting audits and security readiness.