5 results for Network Administrator in San Marcos, TX

Network Administrator

San Antonio, TX
onsite
Contract / Temporary to Hire
42.75 - 49.5 USD / Hourly
We are looking for a skilled Network Administrator to join our team in San Antonio, Texas. In this Contract to permanent position, you will play a critical role in ensuring the seamless operation and optimization of our network infrastructure. Your expertise will contribute to maintaining high performance and reliability across local and wide area networks. Responsibilities: • Monitor network performance to identify and resolve issues, ensuring optimal operation. • Implement necessary software updates and hardware upgrades for improved network functionality. • Configure and document network components, including firewalls, routers, switches, and hubs, to meet organizational needs. • Provide technical support and assistance to staff, administrators, vendors, and other personnel. • Respond promptly to inquiries and troubleshoot network-related problems. • Collaborate with service providers and external vendors to maintain and enhance network infrastructure. • Manage and deploy Cisco Layer 2 and Layer 3 technologies to support network security and efficiency. • Maintain detailed records and documentation for all network configurations and changes. • Ensure compliance with security protocols and best practices across all network systems.
2026-04-01T00:00:00Z

Systems Administrator

Austin, TX
onsite
Temporary
47 - 55 USD / Hourly
Systems AdministratorOnsite | Austin, TX | Contract Robert Half is partnering with a client in Austin, TX to hire a Systems Administrator on a contract basis. The Systems Administrator will perform complex to highly complex (senior-level) systems administration work supporting critical enterprise infrastructure. This role is responsible for the upkeep, configuration, and reliable operation of core systems, including installing and upgrading hardware and software, troubleshooting system issues, and providing technical guidance to other team members. Responsibilities:<ul><li>Maintain server data integrity through appropriate software and hardware solutions, including implementing and managing scheduled backup and data archiving processes.</li><li>Configure automation routines using scripting and other programming languages.</li><li>Evaluate existing information processing systems to assess effectiveness and identify opportunities to improve productivity and workflow.</li><li>Coordinate, plan, and schedule system installations, upgrades, and end-user or technical training for new or revised systems.</li><li>Define and manage roles and access privileges for users and devices across multiple systems to prevent unauthorized access.</li><li>Assist with technical analysis and documentation for simple to complex projects, migrations, and software upgrades.</li><li>Perform system scans, research identified issues, recommend appropriate resolutions, and validate solutions through testing.</li><li>Support system compliance efforts by aligning environments with applicable standards, frameworks, and best practices while maintaining operational continuity.</li><li>Work closely with external vendors, including those supporting cloud hosting and cloud management environments.</li></ul>
2026-03-16T00:00:00Z

Systems Administrator

San Antonio, TX
onsite
Temporary
26.1915 - 30.327 USD / Hourly
Robert Half is seeking a skilled System Administrator to support a client in San Antonio, Texas, 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. Higher‑Level ResponsibilitiesThe System Administrator will be responsible for advanced infrastructure operations, environment stability, and enterprise‑level configuration management. Key responsibilities include:<ul><li>Developing and deploying Group Policy Objects (GPOs) and scripts to remediate complex or widespread end‑user device (EUD) issues related to vulnerabilities, security requirements, or compliance mandates.</li><li>Maintaining server and networking equipment, performing regular maintenance, addressing vulnerabilities, and ensuring compliance with Department of Defense (DoD) and DoW standards.</li><li>Administering VMware vCenter and ESXi hosts, including license updates, certificate management, patching, troubleshooting, and resource allocation across the virtual environment.</li><li>Managing internal and external security certificates, ensuring proper tracking, renewals, and alignment with organizational security policies.</li><li>Updating and managing critical server functions as the environment evolves—for example:</li><li>Updating WSUS for new Windows OS versions</li><li>Updating WDS for new hardware deployments</li><li>Applying updates to RHEL and other Linux servers</li><li>Supporting additional server roles as needed</li><li>Troubleshooting and maintaining backup servers and Oracle-based devices, resolving issues to ensure system continuity and data integrity.</li></ul> IT Gear Support Responsibilities(General support and configuration; vendor support/maintenance contracts are maintained separately)This role includes support for a broad range of IT equipment and technologies:<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>
2026-04-01T00:00:00Z

Systems Administrator

San Antonio, TX
onsite
Contract / Temporary to Hire
35 - 38.5 USD / Hourly
We are looking for an experienced Systems Administrator to join our team in San Antonio, Texas. This contract position offers an excellent opportunity to manage and maintain essential IT systems while contributing to the overall efficiency of operations. The ideal candidate will have a strong background in system administration and a proven ability to support a variety of platforms and tools. Responsibilities: • Perform daily system administration tasks, including provisioning, installation, configuration, patching, and maintenance of hardware and software systems. • Manage and support Windows Active Directory environments, including storage, network infrastructure, and backup systems. • Operate and maintain monitoring and management tools such as Microsoft system tools. • Communicate complex technical concepts effectively to non-technical team members and stakeholders. • Administer and provide support for virtualization platforms, including Microsoft Hyper-V and VMware vCenter. • Develop and utilize PowerShell scripts to enhance system automation and efficiency. • Ensure system reliability and performance by conducting regular assessments and troubleshooting issues. • Collaborate with other IT professionals to optimize system operations and resolve technical challenges. • Contribute to the planning and implementation of infrastructure upgrades and improvements.
2026-04-01T00:00:00Z

Database Administrator

Austin, TX
onsite
Temporary
57.7885 - 66.913 USD / Hourly
Database AdministratorOn-site | Austin, TX | Contract We are looking for an experienced Database Administrator to join our team on a long-term contract basis in Austin, Texas. This role involves overseeing advanced database management tasks, optimizing performance, and ensuring seamless integration with cloud-based systems. The ideal candidate will play a key role in supporting applications with complex data models, workflows, and reporting requirements within an Agile Scrum environment. Responsibilities:• Manage and maintain database systems, ensuring optimal performance and reliability.• Perform data modeling, prototyping, and logical and physical database design.• Optimize database performance through advanced performance tuning techniques.• Implement database security measures and execute recovery procedures to safeguard data.• Support data migration processes and integrate databases with cloud platforms such as Azure.• Develop and maintain standards for data integrity, redundancy control, and database accessibility.• Create test environments, libraries, and procedures to support application development.• Evaluate and incorporate user requests for new data elements and systems into the existing database environment.• Provide technical assistance to users and ensure compliance with accessibility standards.• Assist in the installation, analysis, and benchmarking of database management software.
2026-04-01T00:00:00Z