Network Administrator II
CORE4CE
San Antonio, TX · Posted October 21, 2026
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Where San Antonio, TX ranks
Where San Antonio, TX placed in our monthly rankings, month by month. Each month stays online at its own address.
November 2026
- #1Best all-round cities for new graduates in the Southwest67 / 100 · of 15
- #5Cities with the most jobs that do not need a four-year degree in the Southwest136 jobs · of 38
- #5Cities hosting the most business conferences in the Southwest29 conferences · of 16
- #6Best college towns for junior jobs in the Southwest36% · of 32
- #6Cities hosting the most government & public sector conferences5 conferences · of 29
- #7Best cities for pay after cost of living in Texas$123k · of 8
Rankings about engineering jobs
- Best cities for software and engineering jobs #1 San Francisco (3,412 openings)
- Best cities for engineering pay after cost of living #1 San Mateo ($216k)
- Most requested AI skills in engineering jobs #1 AI tools in daily work (6.1%)
- AI tools named most often in engineering jobs #1 Claude (1.7%)
- Employers with the most engineering jobs #1 Amazon (2,992 roles)
How AI is used in this kind of work
Among network and computer systems administrators, AI is already used for a large share of the tasks. Measured exposure for network and computer systems administrators: 34% (high).
Share of this job’s tasks that AI is already used for at work, from real usage. It is not a forecast of job loss, and a low number means no use seen yet. Source: Anthropic Economic Index.
About the job
Skip Navigation Home Jobs My Account Menu Jobs My Account Loading... Core4ce Careers An Unwavering Force for National Security search chevron_left Core4ce Careers Jobs Apply Network Administrator II Job Location San Antonio, Texas, United States Tracking Code 1444-383 Position Type Full-Time/Regular Core4ce is looking for a Network Administrator II to join the team. The Network Administrator will provide on-site local LAN Support for PEO MS/CIO, J-S, and MHS IT support system components. The ideal candidate will have experience with managing and monitoring local area networks (LAN) as well as troubleshooting experience with core and edge switches. The candidate will ensure that all network equipment complies with industry and corporate standards as well as conduct routine preventative measures and implement and maintain network security and ensure security compliance. This role will be responsible for the planning and implementation of future IT development projects. Responsibilities: Deploy and sustain new or existing information networks, such as local area networks (LAN), Wireless Local Area Network (WLAN), intranets, extranets, and other communications networks. Administers day-to-day sustainment, integrity, security and availability of the network. Perform daily performance monitoring, capacity analysis, and maintain security posture of the network. Configures network hardware and software infrastructure including switches, routers, firewalls, hubs, bridges, gateways, and virtual devices in VMware. Assist architecture and engineering with evaluation, making recommendations and testing of network hardware and software products. Maintain accurate documentation of network configurations, installations, and changes. Performs network infrastructure maintenance upgrades to ensure a proper security and operational posture is maintained. Provide necessary on-site IT support or system administration for all servers, network equipment, operating systems, and applications on the supported networks. Troubleshooting core and edge switches. Planning and scheduling the installation of new or modified network hardware and systems This position is designed to be flexible, with responsibilities evolving to meet business needs and enable individual growth. Requirements: Tier 3 Suitability or higher clearance. (4) years of progressive experience demonstrating the required proficiency. Bachelor’s degree or equivalent experience. Certification requirements to meet IAT II, (Sec+ and Computing Environment). Demonstrating a solid understanding of firewalls, routers, switches, and other network technologies including Palo Alto and Cisco Firewalls. Experience with LAN, VPN, IPS and associated technologies. Experience with core and edge switching. Understanding of essential network services such as DNS, SMTP, NTP, IMAP, and SNM. Network Administration: Deploy, upgrade, and support enterprise and facility network infrastructure. Network Monitoring & Troubleshooting. Why Work for Us? Core4ce is a team of innovators, self-starters, and critical thinkers—driven by a shared mission to strengthen national security and advance warfighting outcomes. We offer: 401(k) with 100% company match on the first 6% deferred, with immediate vesting Comprehensive medical, dental, and vision coverage—employee portion paid 100% by Core4ce Unlimited access to training and certifications, with no pre-set cap on eligible professional development Tuition assistance for job-related degrees and courses Paid parental leave, PTO that grows with tenure, and generous holiday schedules Got a big idea? At Core4ce, The Forge gives every employee the chance to propose bold innovations and help bring them to life with internal backing. Join us to build a career that matters—supported by a company that invests in you. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy), national origin, disability, veteran status, age, genetic information, or other legally protected status. *Core4ce provides the listed pay range for this position as a general guideline only and not as a guarantee of compensation or salary. Final offers may take into account a variety of factors, including, but not limited to, job responsibilities, education, experience, knowledge, skills, abilities, internal equity, market data alignment, any applicable collective bargaining agreement, and other legal requirements. Salary Range $75,000.00 - $85,000.00 Salary Currency USD Salary Type Annually Apply About Core4ce Sitemap Terms Of Use Privacy Policy Home Contact Us Accessibility Statement close