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.<br><br>Responsibilities:<br>• Monitor network performance to identify and resolve issues, ensuring optimal operation.<br>• Implement necessary software updates and hardware upgrades for improved network functionality.<br>• Configure and document network components, including firewalls, routers, switches, and hubs, to meet organizational needs.<br>• Provide technical support and assistance to staff, administrators, vendors, and other personnel.<br>• Respond promptly to inquiries and troubleshoot network-related problems.<br>• Collaborate with service providers and external vendors to maintain and enhance network infrastructure.<br>• Manage and deploy Cisco Layer 2 and Layer 3 technologies to support network security and efficiency.<br>• Maintain detailed records and documentation for all network configurations and changes.<br>• Ensure compliance with security protocols and best practices across all network systems.

• Minimum of 3 years of experience in data network administration.<br>• At least 1 year of hands-on experience with WAN design, deployment, maintenance, and support.<br>• Proficiency in VMware and VMware Infrastructure.<br>• Strong knowledge of Cisco technologies, including Layer 2 and Layer 3 configurations.<br>• Familiarity with Microsoft Office 365 and Windows 10.<br>• Experience with firewalls, switches, and other networking equipment.<br>• CISSP certification or equivalent security expertise is preferred.<br>• Ability to work collaboratively and communicate effectively with technical and non-technical stakeholders.

<h3 class="rh-display-3--rich-text">Technology Doesn't Change the World, People Do.^®</h3> <p>Robert Half is the world’s first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles.</p> <p>Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. <a href="https://www.roberthalf.com/us/en/mobile-app" target="_blank">Download the Robert Half app</a> and get 1-tap apply, notifications of AI-matched jobs, and much more.</p> <p>All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit <a href="https://roberthalf.gobenefits.net/" target="_blank">roberthalf.gobenefits.net</a> for more information.</p> <p>© 2025 Robert Half. An Equal Opportunity Employer. M/F/Disability/Veterans. By clicking “Apply Now,” you’re agreeing to Robert Half’s <a href="https://www.roberthalf.com/us/en/terms">Terms of Use</a> and <a href="https://www.roberthalf.com/us/en/privacy">Privacy Notice</a>.</p>