Senior Network Security Engineer–TS/SCI | Flexible Time Off

CACI International Inc; Springfield (VA); On-site; USD 75,000 - 158,000; Full time

Job summary

CACI International Inc is seeking a Senior Firewall Engineer to support enterprise-wide security architecture and governance. You will design, implement, and maintain secure networks across WAN/LAN, coordinating with government and customers to protect missions.

The role requires active TS/SCI clearance, DoD certifications, and hands-on experience with Palo Alto, Cisco, Juniper, F5, IDS, and VMware. Expect a dynamic environment focused on integrity, trust, and continuous growth, with up to 10%

Qualifications

• Active TS/SCI clearance with ability to pass polygraph.
• BA/BS in IT, cybersecurity, or related field.
• Minimum 5 years in network security for large-scale enterprise networks.
• DoD 8140/8570 IAT Level II certification (current).
• Post-hire: CSSP Infrastructure Support certification within 120 days.
• Experience with firewalls (Palo Alto, Juniper, Cisco).
• Experience with Routers/Switches (Juniper, Cisco).
• IDS/IPS experience (FireEye, F5, Cisco FTD).
• Unix, RHEL, Windows Enterprise AD, VMware.

Responsibilities

• Assist with design, analysis, testing, and implementation of secure network architectures.
• Conduct risk assessment and provide design recommendations.
• Manage WAN, LAN, CAN, and remote network security as well as incident and problem management.
• Oversee security infrastructure sustainment, maintenance, and advanced configuration.
• Oversee the reporting, documentation, and investigation of all security‑related incidents; lead corrective measures.
• Develop and execute standard operating procedures (SOPs) for security tools.
• Evaluate and report on new network Security technologies to enhance the capabilities of the network.
• Act as liaison to the contract and customer management, and government DAA regarding network security status, policies, and procedures.

Skills

Network security

Security architectures

Risk assessment

DoD 8140/8570

IAT Level II

Education

BA/BS degree

Related field

Tools

Palo Alto

Juniper

Cisco

F5

FireEye

Cisco FTD

Windows AD

VMware

RHEL

Job description

CACI International Inc is seeking a Senior Firewall Engineer to support enterprise-wide security architecture and governance. You will design, implement, and maintain secure networks across WAN/LAN, coordinating with government and customers to protect missions.

The role requires active TS/SCI clearance, DoD certifications, and hands-on experience with Palo Alto, Cisco, Juniper, F5, IDS, and VMware. Expect a dynamic environment focused on integrity, trust, and continuous growth, with up to 10%