Secure Network Administrator – 3rd Shift (TS/SCI)

Tetrad-Digital-Integrity-LL; Arlington (VA); On-site; USD 80,000 - 84,000; Full time

Job summary

Tetrad Digital Integrity (TDI) is seeking a Network Administrator for the 3rd shift (10 PM to 6 AM) to support the CESO program in Arlington, VA. This onsite role requires an active TS/SCI clearance and a willingness to work nights and weekends.

You will monitor networks, configure devices, troubleshoot issues, and coordinate maintenance to keep critical systems secure and available. Collaboration with engineers and vendors is essential.

Qualifications

• Active TS/SCI clearance required.
• DoD 8750 IAT level II certification (e.g., Security+ CE) required.
• Bachelor's degree and 4+ years related experience.
• Hands-on experience configuring and managing network infrastructure (switches/routers/VLANs/802.1X).
• Proficient with BGP/OSPF and IPsec VPNs.
• Able to monitor performance, security, availability and connectivity.

Responsibilities

• Monitor network connections and performance to ensure availability.
• Identify risks and mitigate network issues.
• Plan, coordinate, implement maintenance, installation, and security.
• Receive and resolve user access requests.
• Troubleshoot and escalate complex problems to senior engineers or vendors.
• Configure, install, and maintain network devices and software.

Skills

TS/SCI clearance

Network monitoring

Troubleshooting

24x7 shift capability

Security best practices

Communication with engineers/vendors

Education

Bachelor's degree

Tools

Switches

Routers

VLANs

802.1X

BGP

OSPF

IPsec VPN

S2S VPN troubleshooting

Security+ CE / DoD 8750 IAT II

Job description

Tetrad Digital Integrity (TDI) is seeking a Network Administrator for the 3rd shift (10 PM to 6 AM) to support the CESO program in Arlington, VA. This onsite role requires an active TS/SCI clearance and a willingness to work nights and weekends.

You will monitor networks, configure devices, troubleshoot issues, and coordinate maintenance to keep critical systems secure and available. Collaboration with engineers and vendors is essential.