Onsite Network Engineer (L2/L3) — SCI Poly Clearance

Northrop Grumman Corp.; Aurora (CO); On-site; USD 83,000 - 155,000; Full time

Job summary

Northrop Grumman Space Sector is seeking a Network Engineer – Level 2 or Level 3 to join our team in Aurora, CO. This 100% onsite role requires a Top-Secret/SCI clearance with CI polygraph and involves supporting WAN/LAN design, testing, and network upgrades.

The position emphasizes network security, installation, and troubleshooting across Cisco/Juniper gear, with responsibilities ranging from planning to implementation in a demanding, mission-critical environment.

Qualifications

• Active Top-Secret/SCI clearance with CI polygraph at time of application.
• CompTIA Security+ or 8570 certification.
• Experience with switching, routing, firewalls, cabling, hardware with Cisco/Juniper.

Responsibilities

• Provide WAN/LAN development and maintenance support.
• Install, configure, monitor, and maintain network hardware and software.
• Coordinate network security measures with other specialists.
• Assist projects linking to the network and troubleshoot issues.
• Develop methodologies for installation and support of the network.

Skills

Network engineering

WAN/LAN development

Security practices

Documentation writing

Education

Bachelor's degree in a related field

Master's degree (optional)

Tools

Cisco equipment

Juniper equipment

Job description

Northrop Grumman Space Sector is seeking a Network Engineer – Level 2 or Level 3 to join our team in Aurora, CO. This 100% onsite role requires a Top-Secret/SCI clearance with CI polygraph and involves supporting WAN/LAN design, testing, and network upgrades.

The position emphasizes network security, installation, and troubleshooting across Cisco/Juniper gear, with responsibilities ranging from planning to implementation in a demanding, mission-critical environment.