Top Systems Administrator Jobs

Assist project teams with technical issues during project initiation and planning; ensure continued operation of Linux systems for wifi services.

Administer and maintain Windows and Linux servers, virtualization, storage, backups, and Microsoft 365. Provide application support, troubleshoot integrations, coordinate incidents, participate in deployments, and support security, compliance, automation, and on-call operations.

Provide implementation, troubleshooting, maintenance, and daily operation of IT systems. Deliver Tier 1 Help Desk and Tier 2 escalation support, manage configuration and operation of client/server, storage, network, and mobile devices, and assist users with access and usage issues. Support monitoring and problem resolution across IT infrastructure.

Manage and maintain software systems for engineering, manufacturing, and production; lead migrations/upgrades; develop reporting code and dashboards; train and support users; document processes; collaborate with stakeholders to improve system performance and user experience.

Administer and maintain a mission LAN: perform OS patching, backups/restores, virus scanning, firewall protection, and DTO services; ensure ISSM/ATO security compliance and coordinate corporate or customer support.

Provide day-to-day administration and support for Windows workstations, servers, Microsoft 365, Azure AD/Active Directory, and Intune-managed endpoints. Perform deployments, patching, vulnerability remediation, user administration, troubleshooting, backups, documentation, and assist senior staff with upgrades, migrations, and cybersecurity/compliance activities (CMMC, NIST SP 800-171). Occasional travel to customer sites (1-2 trips/year).

Provide day-to-day administration, monitoring, and support of ALLO's GCP environment. Manage IAM and security policies, track and report cloud usage and billing, assist deploying and maintaining cloud resources and AI tools, maintain governance documentation, collaborate with ITSM and development teams, and participate in a rotating on-call schedule for 24/7 support.

Serve as senior technical authority securing wireless communications and managing cross-domain information sharing. Deploy, maintain, and monitor CSfC VPN and cross-domain solutions, apply security patches/IAVAs, develop POA&Ms, and ensure compliance with DoD/DISA cybersecurity requirements across Shaw AFB and Kuwait.

Design, implement, and maintain enterprise Identity and Access Management systems. Administer user lifecycle, RBAC, SSO/MFA, PAM, directory services, automate IAM workflows, integrate applications (SAML/OAuth/OIDC/SCIM/LDAP), monitor authentication security, support audits, and coordinate with cybersecurity and application teams.

Support and modernize a cloud-first IT environment, administering Microsoft 365/Entra ID and Intune, managing LAN/WAN/WLAN and firewalls, leading infrastructure migrations and security/governance efforts, and providing office technology support across multiple locations.

Support and administer mission-critical Army IT systems: install, configure, and maintain workstations, file and web servers, security tools (firewalls, anti-virus, IDS), monitor performance and compliance, develop documentation and web pages, train users, enforce IT policies and Cyber WorkForce directives, and support DoD standards across multi-year programs.

Administer and support UNIX/Linux/Solaris servers in production data centers; manage Chef configuration automation; operate VMware Enterprise virtualization; collaborate with teams; support middleware (Apache, Tomcat), databases (Oracle), storage (SAN/NAS) and disaster recovery as needed.

Administer and support enterprise Citrix environments (XenApp/XenServer/NetScaler), handle incidents and change management, perform VM, DHCP, AD, Group Policy and storage administration, ensure networking/security standards, and meet SLAs.

Provide senior-level administration, troubleshooting, and leadership for Windows-based production environments. Responsibilities include monitoring, incident and change management, patching, virtualization management, security and vulnerability protection, asset management, and mentoring junior staff to meet SLAs and engineering governance.

Provide technical leadership and Level 3 24x7 support for complex UNIX/Linux environments. Design HA and secure server/storage infrastructure, perform capacity planning, manage HP-UX/Solaris/AIX/RHEL systems, SAN/NAS and backup/recovery, implement DR and virtualization, handle incident troubleshooting with vendors, maintain monitoring, change/configuration control, and update system documentation.

Provide technical expertise for planning, implementing, maintaining, and troubleshooting UNIX and Windows systems, networks, mail servers, and user IT issues. Deliver help desk support, perform system maintenance, configure networks, document incidents, evaluate hardware, and create training materials.

Provide systems administration support including managing and monitoring servers, storage, network and mobile devices; Tier 1/2 troubleshooting; configure Linux/RHEL and Windows; perform patches, backups, account/security administration; support upgrades, testing, reporting, and user support.

Administer and operate a self-hosted ServiceNow (Zurich) platform on AWS, managing RHEL9 and Windows servers, EC2, RDS, ALBs, and security groups. Perform upgrades, incident response, and platform modernization. Deploy and integrate ServiceNow AI features with AWS Bedrock/LLM backends, support MCP configuration, and collaborate on integrations and POCs.

The Senior Systems Administrator is responsible for managing on-premises and cloud systems, focusing on security, identity, server administration, backup, and SaaS applications while coordinating with external vendors and performing updates as needed.

The Network/Systems Administrator will maintain data security, track network requests, provide communication to customers, log contacts, and report activities.

The Systems Administrator will monitor system performance metrics, support system administration tasks, and manage FICO Debt Manager integration with other systems.

The Systems Administrator manages mission-critical IT infrastructure, providing support, troubleshooting, and maintenance for Windows and UNIX systems.

The Windows Systems Administrator will manage Windows Server operations, Active Directory, patch automation, and VMware systems, while leading a team and ensuring effective communication.

Administer and improve Crest Operations’ hybrid IT environment across Windows Server, Active Directory, Microsoft 365, Azure, VMware, and endpoint platforms. Responsibilities include identity and access management, endpoint configuration, patching, migrations, backups, recovery testing, monitoring, root-cause troubleshooting, automation with PowerShell and APIs, documentation, ITIL-based ticket and change management, and proactive risk identification.

Administer, maintain, monitor, and troubleshoot Linux servers. Deploy and migrate systems on AWS, architect cloud solutions, test new configurations, manage Apache or NGINX environments, troubleshoot networking issues, and implement load-balancing and monitoring solutions. Preferred experience includes orchestration tools, Jenkins, scripting languages, and RHCE certification.