Senior Principal Cyber Systems Engineer (TS/SCI/Poly)

Northrop Grumman; Chantilly (VA); On-site; USD 129,000 - 194,000; Full time

Benefits offered by this job

Comprehensive benefits

9/80 work schedule

Education assistance

Training and development

Paid time off

Job summary

Northrop Grumman Mission Systems in Chantilly, VA is seeking a Sr. Principal Cyber Systems Engineer to monitor and maintain a mission-critical network, provide Tier-2/3 support, and develop documentation.

The role requires leading network upgrades and collaborating across teams, with strong expertise in security and system administration. The candidate will ensure security standards, support mission needs, and contribute to system engineering in a fast-paced environment.

Qualifications

• Active TS/SCI with Polygraph clearance required to start.
• Active DoD 8570 IAT Level II or higher (e.g., CompTIA Security+) required to start, and must be maintained.
• 8+ years with Bachelor's degree; 6 years with Masters; 4 years with PhD; 12 years of experience in lieu of a degree.
• Experience troubleshooting technical issues based on OSI model.
• Experience with cabling, fiber, racking equipment.
• Strong knowledge of Cisco CLI and Juniper JunOS commands.

Responsibilities

• Provide engineering and administrative support onsite for developers and testers.
• Develop, implement, and support solutions for mission-critical infrastructure.
• Analyze systems and networks and recommend changes to drive efficiencies.
• Collaborate with mission system developers to deploy solutions for customer needs.
• Maintain, test, and apply STIG configurations for network devices.
• Respond to security findings and Break Fix events across the infrastructure.
• Create and maintain network documentation including SOPs and Visio diagrams.

Skills

Cisco CLI

Juniper JunOS

RMF/ATO

OSI model troubleshooting

Linux

Windows

Education

Bachelor's degree

Master's degree

PhD

Tools

Cisco devices

Network documentation

Job description

Northrop Grumman Mission Systems in Chantilly, VA is seeking a Sr. Principal Cyber Systems Engineer to monitor and maintain a mission-critical network, provide Tier-2/3 support, and develop documentation.

The role requires leading network upgrades and collaborating across teams, with strong expertise in security and system administration. The candidate will ensure security standards, support mission needs, and contribute to system engineering in a fast-paced environment.