Principal Network Engineer: Mission-Critical Cisco Infra

General Dynamics Information Technology, Inc.; Germantown (MD); On-site; USD 111,000 - 150,000; Full time

Benefits offered by this job

401(k) match

Paid time off

Health benefits

Job summary

General Dynamics Information Technology, Inc. is seeking an experienced Network Engineer Principal to design, implement, and maintain complex network systems in a large-scale Cisco environment for DOE/NNSA mission-critical operations.

The role emphasizes security, reliability, and scalable infrastructure across LAN, MAN, and WAN, with emphasis on design, deployment, and optimization. Responsibilities include monitoring, troubleshooting, capacity planning, vendor coordination, and documentation

Qualifications

• Bachelor's degree or equivalent; Cisco certification preferred.
• 10+ years of professional network engineering experience in large-scale environments.
• DOE Q or TS clearance required.

Responsibilities

• Design, build, and maintain LAN/MAN/WAN networks for performance and scalability.
• Monitor, troubleshoot, and perform root-cause analysis of network issues.
• Analyze traffic patterns and provide capacity planning solutions.
• Coordinate with vendors for issue resolution and escalation.
• Configure systems including hardware selection and platform specs.
• Evaluate and test network products to ensure standards compliance.
• Provide technical oversight across network operations, including security protocols.

Skills

Network design

Troubleshooting

Cisco networking

Security best practices

Capacity planning

Vendor coordination

System monitoring

Education

Bachelor's degree or equivalent

Cisco certification (preferred)

Tools

Cisco IOS

Juniper

Palo Alto

Job description

General Dynamics Information Technology, Inc. is seeking an experienced Network Engineer Principal to design, implement, and maintain complex network systems in a large-scale Cisco environment for DOE/NNSA mission-critical operations.

The role emphasizes security, reliability, and scalable infrastructure across LAN, MAN, and WAN, with emphasis on design, deployment, and optimization. Responsibilities include monitoring, troubleshooting, capacity planning, vendor coordination, and documentation