✦ Luna Orbit — System Administration

Systems Administrator

at Robert Half

📍 San Antonio, TX Remote 💰 $38 – $44 USD / year Posted April 09, 2026
Salary $38 – $44 USD / year
Type Temp-to-Hire
Experience mid
Exp. Years Not specified
Education Not specified
Category System Administration

Manage and optimize complex computer systems for a contract-to-permanent role in San Antonio. You will administer core identity and server systems, support virtualization and storage, and ensure backups and IT security compliance.

  • Administer and maintain Active Directory, Windows Server, and Microsoft Entra ID
  • Oversee ESX virtualization environments and manage NetApp and SAN storage
  • Implement Rubrik backup solutions to safeguard data
  • Monitor system performance and ensure compliance with IT security standards
  • Provide technical guidance and project management support for system implementations and upgrades

This is an infrastructure-focused Systems Administrator role covering Active Directory, Windows Server, Microsoft Entra ID, ESX virtualization, NetApp and SAN storage, and Rubrik backup solutions. You will monitor performance and compliance, support implementations/upgrades, and maintain documentation and configuration reporting.

The ideal candidate is a Systems Administrator with hands-on experience administering Active Directory, Windows Server, and Microsoft Entra ID. They are comfortable managing virtualization (ESX), storage (NetApp and SAN technologies), and implementing Rubrik-based backups while maintaining IT security compliance and system reliability.

Administer and maintain Active DirectoryAdminister and maintain Windows ServerAdminister and maintain Microsoft Entra IDOversee virtualization environments including ESXManage storage solutions like NetApp and SAN technologiesImplement backup solutions using RubrikMonitor system performance and maintain compliance with IT security standardsProvide technical expertise and project management support for system implementations and upgrades
Active DirectoryWindows ServerMicrosoft Entra IDESXNetAppSAN technologiesRubrik
Active DirectoryWindows ServerMicrosoft Entra IDESXNetAppSAN technologiesRubrikbackup solutionsIT security best practicessystem performance monitoringcompliance with IT security standardssystem availability and reliabilitydocumentation and reportingsystem implementationssystem upgrades
Active DirectoryWindows ServerMicrosoft Entra IDvirtualization environmentsESXstorage solutionsNetAppSAN technologiesbackup solutionsRubrikIT security best practicessystem performance monitoringcompliance with IT security standardssystems documentationsystem configuration trackingsystem implementationsystem upgradessystem availability and reliabilityrisk identification and mitigationtechnical guidance
cross-functional collaborationstakeholder managementtechnical communicationproblem-solvingdocumentation and reporting discipline
Industry Consulting
Job Function Administer, monitor, and improve enterprise IT infrastructure with strong security, backup, and reliability practices.
Role Subtype Systems Administrator
Tech Domains Active Directory, Cloud & Infrastructure, Windows Server, VMware, Backup Admin
Systems AdministratorSysadminActive DirectoryWindows ServerMicrosoft Entra IDEntra IDvirtualization environmentsESXNetAppSANSAN technologiesstorage solutionsRubrikbackup solutionsIT security best practicessystem performance monitoringcompliance with IT security standardssystem availabilitysystem reliabilitydocumentationtechnical guidanceproject management supportsystem implementationssystem upgradescross-functional teams

Hands-on experience with Active Directory, Windows Server, and Microsoft Entra ID, Hands-on experience with ESX virtualization and Rubrik backup

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