Network Administrator (3rd Shift)

Core4ce; San Antonio (TX); On-site; USD 70,000 - 90,000; Full time

Benefits offered by this job

401(k) match

Health benefits

Training & certs

Tuition assistance

Parental leave & PTO

Internal innovation program

Job summary

Core4ce in San Antonio, Texas is seeking a Network Administrator to configure, install, and support network infrastructure, ensure security compliance, and drive IT development projects.

The role covers planning and configuring switches/routers/firewalls, troubleshooting, and managing 1st–3rd shifts; requires a Secret Clearance and 8570 IAT II certification. Join a team focused on strengthening national security through robust networks.

Qualifications

• Active Secret Clearance or eligible to obtain a Secret Clearance.
• 1-2 years hands-on experience as a Network Administrator.
• High School Diploma or GED.
• 8570 IAT Level II Certification and CND Infrastructure Support within 6 months.
• Solid understanding of firewalls, routers, switches, and other network technologies incl. Palo Alto and Cisco Firewalls.
• Experience with LAN/WAN, VPN, IPS and related technologies.
• Experience with TCPDump, Wireshark and analyzing network traffic.
• Understanding of essential network services such as DNS, SMTP, NTP, IMAP, SNMP.

Responsibilities

• Plan and schedule installation of new or modified network hardware and systems.
• Manage accounts and network rights.
• Configure network hardware and software infrastructure incl. switches/routers/firewalls.
• Analyze and resolve faults from major outages to password issues.
• Ensure systems availability, integrity, and efficiency; maintain configuration.
• Manage installation and integration of system fixes, updates, and enhancements.
• Ensure rigorous application of information security policies and practices.
• Shifts: 1st, 2nd, and 3rd; 1st 6:00 am–2:30 pm, 2nd 2:00 pm–10:30 pm, 3rd 10:00 pm–6:30 am.

Skills

Network administration

Security clearance eligibility

Problem solving

Education

High School Diploma or GED

8570 IAT Level II Certification

CND Infrastructure Support certification

Tools

Palo Alto

Cisco Firewalls

LAN/WAN

VPN

TCPDump

Wireshark

Job description

Job Location

San Antonio, Texas, United States

Tracking Code

1364-383

Position Type

Full-Time/Regular

Core4ce is looking for a Network Administrator to join the team. The Network Administrator will configure, install, and support network hardware and software infrastructure. 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 and undertaking project work including project management duties.

Responsibilities

• Planning and scheduling the installation of new or modified network hardware and systems
• Managing accounts and network rights
• Configures network hardware and software infrastructure including switches, routers, firewalls, hubs, bridges, gateways, and virtual devices in VMware
• Analyzes and resolves faults, ranging from major system crash to a forgotten password
• Ensuring systems availability, functionality, integrity, and efficiency; maintaining systems configuration
• Managing the installation and integration of system fixes, updates, and enhancements
• Ensuring the rigorous application of information security/information assurance policies, principles, and practices
• Positions either on 1st, 2nd, and 3rd shift - the shift hours are 1st – 6:00 am to 2:30 pm, 2nd 2:00 pm – 10:30 pm, and 3rd – 10:00 pm – 6:30 am (the following day).

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

Requirements

• Active Secret Clearance or eligible to obtain a Secret Clearance
• 1-2 years of hands-on experience as a Network Administrator.
• High School Diploma or GED
• 8570 IAT Level II Certification and CND Infrastructure Support within 6 months
• Demonstrating a solid understanding of firewalls, routers, switches, and other network technologies including Palo Alto and Cisco Firewalls
• Experience with LAN/WAN, VPN, IPS and associated technologies
• Experience with TCPDump, Wireshark and analyzing network traffic
• Understanding of essential network services such as DNS, SMTP, NTP, IMAP, and SNMP

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

$70,000.00 - $90,000.00

Salary Currency

USD

Salary Type

Annually