Network Administrator - TS/SCI, 3rd Shift (Arlington)

Tetrad Digital Integrity LLC; Arlington (VA); On-site; USD 110,000 - 140,000; Full time

Job summary

Tetrad Digital Integrity LLC in Arlington, VA is seeking a Network Administrator for a 3rd shift (10PM–6AM) to support the CESO program. The role requires an active TS/SCI clearance and on-site work five days a week.

You will monitor networks, implement security measures, troubleshoot issues, and coordinate maintenance with senior engineers and vendors to maintain a secure, highly available network infrastructure.

Qualifications

• Active TS/SCI clearance required.
• DoD 8750 certification at least IAT level II (e.g., Security+ CE).
• Bachelor's degree and 4+ years' related experience; degree may be waived with experience.
• Hands-on experience configuring and managing network infrastructure (switches, routers, VLANs, 802.1X).
• Experience with dynamic routing protocols (BGP/OSPF) and IPsec VPNs.

Responsibilities

• Monitor network performance and availability to ensure user access.
• Identify risks and mitigate issues on the network.
• Plan and implement maintenance, installation, and security enhancements.
• Receive and resolve user access requests.
• Troubleshoot network issues and escalate complex cases.
• Configure, install, and maintain network devices and software.

Skills

Network administration

Security clearance TS/SCI

BGP

OSPF

IPsec VPN

802.1X ACLs

Network monitoring

Troubleshooting

Education

Bachelor's degree

Tools

Palo Alto devices

AWS Cloud

Job description

Tetrad Digital Integrity LLC in Arlington, VA is seeking a Network Administrator for a 3rd shift (10PM–6AM) to support the CESO program. The role requires an active TS/SCI clearance and on-site work five days a week.

You will monitor networks, implement security measures, troubleshoot issues, and coordinate maintenance with senior engineers and vendors to maintain a secure, highly available network infrastructure.