5 results for Systems Security Manager in San Antonio, TX

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>
2026-03-23T00:00:00Z

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.
2026-03-09T00:00:00Z

Systems Administrator

San Antonio, TX
onsite
Temporary
42.75 - 49.5 USD / Hourly
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. Responsibilities:• Manage and maintain Linux-based systems to ensure optimal performance and reliability.• Oversee the deployment and configuration of tools such as Conda and Jupiter• Provide technical leadership in the administration and management of organizational systems.• Collaborate with cross-functional teams to support research efforts and operational goals.• Troubleshoot and resolve system issues to minimize downtime and maximize efficiency.• Implement best practices for system security and data protection.• Monitor system performance and perform regular updates to ensure smooth operation.• Utilize Active Directory to manage user access and permissions.• Support Windows Server environments and Windows 10 systems.• Work with Dell and Citrix technologies to enhance system functionality
2026-03-23T00:00:00Z

Systems Engineer

San Antonio, TX
onsite
Permanent
95000 - 120000 USD / Yearly
Major Duties and Responsibilities Essential Tasks Perform capacity and resource planning, assess risks with recommendations, design and implement VMware server environments. Plan and execute Infrastructure upgrades and migration projects with existing hardware and/or software. Proactively anticipate, prevent and eliminate data center problems and risks by identifying and creating efficient fixes for any security risks, patches/vulnerabilities, etc. Provide Infrastructure services in all areas needed: storage networking, Operating System, network security, directory services, server virtualization using system backup and restore, system and network monitoring, application installation and configuration Standard system administration duties including server install, System/Application install and patch management, Windows problem determination and resolution, log analysis, etc. Participate in after‐hours upgrades, troubleshooting, and/or on‐call availability as needed. Work closely with a collaborative team, other IT staff, including networking, security, and data center operation teams, to facilitate effective issue resolution. Originate specifications, control documents, verification and validation plans, procedures, reports, and other documentation in support of design and development activities. Perform root cause analysis on complex issues in client environments to identify root causes and identify resolution plans. Review system implementation and performance as to implement system enhancements if needed. Develop standardized deployment documentation where necessary to document build standards. Must be able to mentor and teach other members of ITS as necessary. Perform and assume duties and responsibilities of others as assigned by departmental management. Knowledge of MS 365, internet browsers, LAN/WAN networking, enterprise WiFi, VMWare, storage technologies Expert knowledge of PowerShell Ability to configure, install, and maintain hardware and software for VMWare environment, Windows 10 desktops/laptops, and peripherals. Performs other duties as assigned. Education Requires a high school diploma or general equivalency diploma. Related formal training preferred. Licenses and/or Certifications N/A Experience Requires seven or more years of IT experience. Requires Extensive Active Directory and Virtualization Design skills. Requires experience with VMWare ESXi 6 or greater. Requires experience working with Windows 2003‐2018, VMware, Citrix, SBS Server, various backup technologies (Rubrik). Requires experience of Networking including TCP/IP, Switching, VLAN’s Routing and wireless. Knowledge Must obtain a working knowledge of regulatory/quality requirements and perform within all Standard Operating Procedures (SOPs) and policies. Must have extensive knowledge of Microsoft operating systems, Microsoft Server 2003 and above, Clustering technologies, Active Directory design, Server Virtualization (VMware) File Virtualization, SAN design, High Availability, SCCM, SCOM.
2026-03-11T00:00:00Z

IT Manager

San Antonio, TX
onsite
Permanent
125000 - 140000 USD / Yearly
Maintain essential IT infrastructure, including operating systems, security tools, applications, servers, email systems, laptops, desktops, software, and hardware. • Take responsibility for projects and solutions within the larger business initiative. • Handle business-critical IT tasks and systems administration. • Analyze departmental needs, identify vulnerabilities, and boost productivity, efficiency, and accuracy to inform business decisions. • Ensure network components work together seamlessly to meet business needs, using their full range of capabilities, and stay informed about new features and competitor solutions. • Analyze processes, technologies, and vendors continually to find areas for improvement. • Prepare cost–benefit analyses when upgrades are necessary, and monitor vendors to ensure that they are offering the best possible service and value for business needs. • Train employees to use software and hardware; troubleshoot issues and provide technical support when needed. • Mentors, interviews, hires, trains, reviews, supervises, and discipline employees. • Develop and execute disaster planning and maintain data backups. • Developing and implementing IT policy and best practice guides for the organization • Managing and reporting on allocation of IT budget • Identifying opportunities for team training and skills advancement • Develop and implement policies related to network security, disaster recovery, and IT infrastructure. • Analyze resource utilization and develop strategies to optimize performance. • Establish, measure, and define IT goals and maintain an IT roadmap. • Monitor and analyze the success of IT initiatives and projects and continually develop and evaluate new technologies and tools for the company. • Establish a security policy to protect company information and resources. Required Education and Experience: Bachelor’s degree in IT, computer science, or a related field. A minimum of 5-7 years of experience in IT management Preferred Education and Experience: MST-HR-JD031 Revise Date:2024/03/05 Supervisory Responsibilities: Directly supervises all employees involved in the IT department. activities. Carries out supervisory responsibilities in accordance with the organization’s policies and applicable laws. Responsibilities include training employees; planning, assigning, and directing work; assisting management with appraising performance; rewarding employees; addressing complaints and resolving problems. Travel Required: Up to 25%
2026-03-12T00:00:00Z