Secure Network Administrator - TS/SCI, 3rd Shift, Onsite

tetraddigitalintegrityllc; Arlington (VA); On-site; USD 80,000 - 84,000; Full time

Job summary

Tetrad Digital Integrity (TDI) is seeking a Network Administrator for a 3rd shift (10PM–6AM) to join the CESO effort in Arlington, VA. The role requires an active TS/SCI clearance and hands-on network management experience.

Responsibilities include monitoring network performance, implementing maintenance and security, and resolving user access issues. Onsite work five days a week with 24×7 availability expectations.

Qualifications

• Active TS/SCI clearance is 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 Site-to-Site IPsec VPN tunnels.
• Able to monitor and troubleshoot network performance, security, availability, and connectivity.
• Comfortable working 24×7 shifts including nights, weekends, and holidays.

Responsibilities

• Network monitoring to ensure availability for user access and services.
• Identify risks and mitigate network issues proactively.
• Plan, coordinate and implement network maintenance, installation, and security.
• Handle user access requests and resolve service issues.
• Troubleshoot and escalate complex problems to senior engineers or vendors.
• Configure, install, and maintain network devices and software.

Skills

Network admin

TS/SCI clearance

VPN troubleshooting

BGP/OSPF

24x7 shift

Network monitoring

Education

Bachelor's degree

DoD 8750 IAT II

Security+ CE

Tools

Palo Alto devices

AWS Cloud

Job description

Tetrad Digital Integrity (TDI) is seeking a Network Administrator for a 3rd shift (10PM–6AM) to join the CESO effort in Arlington, VA. The role requires an active TS/SCI clearance and hands-on network management experience.

Responsibilities include monitoring network performance, implementing maintenance and security, and resolving user access issues. Onsite work five days a week with 24×7 availability expectations.