Network Administrator II San Antonio, TX

Core4ce; San Antonio, Northern (TX, KY); Hybrid; USD 70,000 - 95,000; Full time

Benefits offered by this job

401(k) match

Medical/Dental/Vision

Training & certifications

Tuition assistance

Parental leave

Paid time off

Internal innovation funding

Job summary

Core4ce in San Antonio, Texas is seeking a Network Administrator II to provide on-site LAN support for PEO MS/CIO, J-S, and MHS IT components. The role emphasizes managing and monitoring LANs, and troubleshooting core and edge switches to maintain performance and security.

You will configure hardware and software including switches, routers, firewalls, hubs, bridges, gateways, and VMware, while documenting changes and supporting future IT projects.

Qualifications

• Tier 3 clearance or higher.
• 4+ years of progressive network experience.
• Bachelor’s degree or equivalent experience.
• IAT II certifications incl. Sec+ and computing environment.
• Strong understanding of firewalls/routers/switches, incl. Palo Alto and Cisco Firewalls.
• Experience with LAN, VPN, IPS and related tech.
• Experience with core and edge switching.
• Knowledge of DNS, SMTP, NTP, IMAP, SNMP.
• Deploy, upgrade and support enterprise network infra.
• Network monitoring and troubleshooting.

Responsibilities

• Deploy and sustain LAN/WLAN/intranet/extranet networks.
• Administers day-to-day sustainment, integrity, security and availability.
• Perform daily performance monitoring, capacity analysis, and security posture.
• Configure network hardware/software including switches, routers, firewalls, hubs, bridges, gateways, and VMware.
• Assist architecture with evaluation and testing of hardware/software products.
• Maintain documentation of network configurations and changes.
• Perform maintenance upgrades to ensure security and operations.
• Provide on-site IT support for servers, equipment, OS, and applications.
• Troubleshooting core and edge switches.
• Plan and schedule installation of new/modified network hardware.

Skills

LAN

VPN

Firewalls

Troubleshooting

Cisco

Palo Alto

Network Monitoring

Education

Bachelor’s degree or equivalent experience

Tools

VMware

Palo Alto

Cisco Firewalls

Job description

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.

This position is designed to be flexible, with responsibilities evolving to meet business needs and enable individual growth.

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

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, withimmediatevesting
• Comprehensive medical, dental, and vision coverage—employee portion paid 100% by Core4ce
• Unlimitedaccess totrainingand certifications, with no pre-set cap on eligible professional development
• Tuition assistancefor job-related degrees and courses
• Paidparental leave, PTO that grows with tenure, and generous holiday schedules
• Got a big idea? At Core4ce,The Forgegives 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.