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# Network Engineer - Level 3 or 4

- **Company:** Northrop Grumman
- **Location:** Colorado Springs, CO, United States
- **Experience:** Expert
- **Salary:** $94,200.0 - $141,200.0
- **Contract:** Permanent contract
- **Skills:** Border Gateway Protocol, Computer Networks, Linux, Domain Name System (DNS), Enhanced Interior Gateway Routing Protocol, Networking Hardware, Internet Protocol, Traceroute, Microsoft Visio, Network Architecture, Network Forensics, Routing, Network Service, Packet Analyzer, Cisco Nexus Switches, Open Shortest Path First (OSPF), Microsoft PowerPoint, TCP/IP, Network Routers, Identity Services Engine, Firewalls (Computer Science), Firewall Services Module, Cisco Switches, Network Server
- **Published:** October 28, 2026
- **Apply:** https://dejobs.org/x/x/01D1AEA6F9CD42E586B315B4A7445F58/job/

## About the Role

* Knowledge of network architecture, engineering, design, implementation, and testing.
 * Understanding of network communication protocols and routing protocols (BGP, OSPF, and EIGRP) and IP network troubleshooting.
 * Knowledge of network testing methodologies using routers, switches, and firewalls.
 * Knowledge of TCP/IP behavior, network communications and routing protocols, network traffic analysis, and troubleshooting experience.
 * Must be an effective communicator with excellent writing and presentation skills using Microsoft PowerPoint and Visio drawing tools.
 * Support and maintain the networks of high-availability systems
 * Support occasional after-hour program activities and operational testing.

Seeking candidates who find satisfaction in working on challenging and diverse assignments in collaborative settings across all levels., Please note your updated and current security clearance level and IAT/relevant certifications on your resume if applicable.

 * Principal Network Engineer - Level 3: Bachelor's Degree in a STEM (Science, Technology, Engineering or Mathematics) discipline preferred from an accredited university and 5 years of related experience or a Master's degree in STEM and 3 years of related experience, or 1 year with a PhD.; or 9 years of relevant work experience may be considered as an alternative to a degree.
 * Sr.Principal Network Engineer - Level 4: Bachelor's Degree in a STEM (Science, Technology, Engineering or Mathematics) discipline preferred from an accredited university and 8 years of related experience or a Master's degree in STEM and 6 years of related experience, or 4 year with a PhD.; or 12 years of relevant work experience may be considered as an alternative to a degree.
 * Applicants must possess a current DoD 8140 certification at IAT Level II or higher (Security+, GSEC, SCNP, SSCP, CISSP, CISA, GSE, SCNA)
 * Must be able to work collaboratively in a team environment with other highly motivated network engineers.
 * Familiarity with network communication products, including routers, switches, firewalls, Domain Name Servers (DNS), and data encryption products.
 * Ability and willingness to travel up-to 10% to support business needs.
 * Applicants must have a current active in-scope U.S. Government issued Top Secret security clearance with SCI eligibility at the time of application, which is required to start.
 * Possess a counter-intelligence polygraph test or willingness to undergo a counter-intelligence polygraph test., * Expertise on Cisco catalyst and Nexus switches
 * Working with HA configurations on switches and firewalls.
 * Firewall configuration (creating access policies, NATing, troubleshooting)
 * Troubleshooting complex connection issues using various tools. (trace route, ping, netcat, netstat, tcpdump, firewall logs, live packet captures, Wire Shark)
 * Creating and maintaining topologies with Visio
 * Documenting and implementing network device STIGs
 * Basic Linux navigation
 * Cisco ISE administration
 * Experience with static and multicast routing

#COSpace

#SpaceSoftwareJobs

#SpaceEngJobs

## Description

The selected Network Engineer - Level 3 or 4 will play a crucial role in the BMDS OPIR Architecture, Enterprise Sensor Lab, and Persistent Infrared Testbed Network and Infrastructure teams, assisting senior system administrators and network subject matter experts (SME's) in managing and sustaining network components vital to the operations of associated support networks, both classified and unclassified.