Network Administrator II

Core4ce Careers; San Antonio (TX); On-site; USD 70,000 - 95,000; Full time

Benefits offered by this job

401(k) with company match

Medical, dental, vision coverage

Training and certifications

Tuition assistance

Parental leave and PTO

Internal innovation backing

Job summary

Core4ce is seeking a Network Administrator II to deliver on-site LAN support for PEO MS/CIO, J-S, and MHS IT components. You will manage LAN/WAN, troubleshoot core and edge switches, and ensure security compliance across the network.

The role emphasizes maintaining documentation, evaluating hardware/software, and planning future IT development projects. Bachelor’s degree or equivalent, with Tier 3 clearance and relevant certifications, are required.

Qualifications

• 4+ years of progressive LAN/WAN networking experience.
• Bachelor's degree or equivalent experience.
• Tier 3 security clearance or higher.
• IAT II, Security+ and Computing Environment certifications.
• Experience with firewalls, routers, switches including Palo Alto and Cisco.
• Knowledge of DNS, SMTP, NTP, IMAP, and SNMP.
• Experience with core and edge switching.
• Network administration: deploy, upgrade and support enterprise network infrastructure.
• Network monitoring and troubleshooting.

Responsibilities

• Deploy and sustain LAN, WLAN, intranets and other networks.
• Maintain security posture and compliance of network equipment.
• Configure switches, routers, firewalls, hubs and VMware devices.
• Assist with evaluation, testing and recommendations on network hardware/software.
• Maintain accurate documentation of configurations and changes.
• Perform performance monitoring and capacity analysis.
• Provide on-site IT support for servers and network devices.
• Troubleshoot core and edge switches.
• Plan installation of new or modified network hardware and systems.

Skills

LAN/WAN networking

Network troubleshooting

Security compliance

Documentation

Network monitoring

Project planning

Education

Bachelor’s degree or equivalent experience

Tier 3 security clearance or higher

IAT II certification

Security+ certification

Computing Environment certification

Tools

Palo Alto

Cisco Firewalls

VMware

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.