Network Infrastructure Engineer (TS/SCI) Secure Networking

CACI International; McLean (VA); On-site; USD 121,000 - 266,000; Full time

Job summary

CACI International is seeking a Network Infrastructure Engineer to support the Luke Team in NOVA. You will deploy, configure, and monitor Cisco routers, switches, and firewalls, ensuring high availability of the data communications network and secure access for users.

The role requires TS/SCI with polygraph, up to 25% travel, and a background in enterprise network architectures, IPv4, routing, VPNs, and security best practices.

Qualifications

• Active TS/SCI with Polygraph is required.
• Bachelor’s degree in Computer Science, Engineering or related field, or equivalent experience.
• Experience designing and building enterprise-level network architectures.
• Experience supporting and troubleshooting production networks with Cisco platforms.
• Knowledge of networking protocols: TCP/IP, Routing (static, OSPF, BGP), VPNs, SSH, ACLs.
• Familiarity with Solarwinds or similar network management tools.
• Understanding of IPv4 networks and network device hardening best practices.
• Experience with Linux/Unix and Windows operating systems.
• Strong attention to detail, problem solving, and teamwork.

Responsibilities

• Deploy, configure, maintain and monitor Cisco routers, switches, and firewalls.
• Troubleshoot and resolve network issues; implement security measures and optimize performance.
• Monitor and resolve network-related service tickets.
• Maintain SOPs and network design documentation.
• Set up user accounts, permissions, and passwords.
• Perform network upgrades to maintain integrity and availability.
• Support and administer third-party applications.
• Ensure security and efficiency of IT infrastructure per industry standards.

Skills

Enterprise network design

Cisco networks

TCP/IP

Routing (OSPF/BGP)

Firewall configuration

SSH & VPNs

Network management tools

Linux/Unix familiarity

Education

Bachelor's degree in Computer Science or Engineering

Tools

Solarwinds

Cisco devices

Cloud basics (AWS/Azure/GCP)

Job description

CACI International is seeking a Network Infrastructure Engineer to support the Luke Team in NOVA. You will deploy, configure, and monitor Cisco routers, switches, and firewalls, ensuring high availability of the data communications network and secure access for users.

The role requires TS/SCI with polygraph, up to 25% travel, and a background in enterprise network architectures, IPv4, routing, VPNs, and security best practices.