Add your latest resume to match with open positions.
2 results for Exchangesystems Administrator in San Antonio, TX
- San Antonio, TX
- onsite
- Temporary
- 26.1915 - 30.327 USD / Hourly
- <p>Robert Half is seeking a skilled <strong>System Administrator</strong> to support a client in <strong>San Antonio, Texas</strong>, responsible for managing mission‑critical systems, ensuring infrastructure security, and maintaining compliance across a diverse IT environment. The ideal candidate will bring strong expertise in server administration, virtualization, networking, automation, and enterprise hardware/software support.</p><p><br></p><p><strong>Higher‑Level Responsibilities</strong></p><p>The System Administrator will be responsible for advanced infrastructure operations, environment stability, and enterprise‑level configuration management. Key responsibilities include:</p><ul><li><strong>Developing and deploying Group Policy Objects (GPOs) and scripts</strong> to remediate complex or widespread end‑user device (EUD) issues related to vulnerabilities, security requirements, or compliance mandates.</li><li><strong>Maintaining server and networking equipment</strong>, performing regular maintenance, addressing vulnerabilities, and ensuring compliance with Department of Defense (DoD) and DoW standards.</li><li><strong>Administering VMware vCenter and ESXi hosts</strong>, including license updates, certificate management, patching, troubleshooting, and resource allocation across the virtual environment.</li><li><strong>Managing internal and external security certificates</strong>, ensuring proper tracking, renewals, and alignment with organizational security policies.</li><li><strong>Updating and managing critical server functions</strong> as the environment evolves—for example:</li><li>Updating <strong>WSUS</strong> for new Windows OS versions</li><li>Updating <strong>WDS</strong> for new hardware deployments</li><li>Applying updates to <strong>RHEL</strong> and other Linux servers</li><li>Supporting additional server roles as needed</li><li><strong>Troubleshooting and maintaining backup servers and Oracle-based devices</strong>, resolving issues to ensure system continuity and data integrity.</li></ul><p><br></p><p><strong>IT Gear Support Responsibilities</strong></p><p>(General support and configuration; vendor support/maintenance contracts are maintained separately)</p><p>This role includes support for a broad range of IT equipment and technologies:</p><ul><li>Palo Alto firewalls</li><li>Cisco switches and routers</li><li>Phone systems (general issues)</li><li>Wireless infrastructure</li><li>Multi‑Function Devices (MFDs)</li><li>VMware platforms</li></ul><p><br></p>
- 2026-04-01T00:00:00Z
- San Antonio, TX
- onsite
- Temporary
- 42.75 - 49.5 USD / Hourly
- <p>We are looking for an experienced Systems Administrator to join our team in San Antonio, Texas. In this long-term contract position, you will play a pivotal role in managing Linux systems while supporting research initiatives and organizational objectives. The ideal candidate will possess in-depth expertise in system management and demonstrate proficiency in a variety of technologies.</p><p><br></p><p>Responsibilities:</p><p>• Manage and maintain Linux-based systems to ensure optimal performance and reliability.</p><p>• Oversee the deployment and configuration of tools such as Conda and Jupiter</p><p>• Provide technical leadership in the administration and management of organizational systems.</p><p>• Collaborate with cross-functional teams to support research efforts and operational goals.</p><p>• Troubleshoot and resolve system issues to minimize downtime and maximize efficiency.</p><p>• Implement best practices for system security and data protection.</p><p>• Monitor system performance and perform regular updates to ensure smooth operation.</p><p>• Utilize Active Directory to manage user access and permissions.</p><p>• Support Windows Server environments and Windows 10 systems.</p><p>• Work with Dell and Citrix technologies to enhance system functionality</p>
- 2026-04-01T00:00:00Z