Network Engineer - Level 3 or 4
Confirmed on the employer's own hiring board on Oct 28, 2026. First seen by Alion on Oct 26, 2026. Northrop Grumman scores B on the Alion truth index.
Description
At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation's history - from the first flight across the Atlantic Ocean, to stealth bombers, to landing on the moon. We look for people who have bold new ideas, courage and a pioneering spirit to join forces to invent the future, and have fun along the way. Our culture thrives on intellectual curiosity, cognitive diversity and bringing your whole self to work - and we have an insatiable drive to do what others think is impossible. Our employees are not only part of history, they're making history.Northrop Grumman Space Systems, Multi-Domain Operations, and Missile Defense Integration Business Unit (BU) has an exciting career opportunity for a Network Engineer - Level 3 or 4 to join our team of qualified, diverse individuals. This position will be at Schriever Space Force Base (SSFB) in Colorado Springs, CO.
Position Overview:
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.
Essential Functions:
- 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.
This requisition may be filled at a higher grade based on qualifications listed below.
This requisition may be filled at either a Principal Network Engineer - Level 3 or a Senior Principal Network Engineer - Level 4.
Basic Qualifications:
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.
Preferred Qualifications:
- 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
Primary Level Salary Range: $94,200.00 - $141,200.00Secondary Level Salary Range: $117,500.00 - $176,300.00The above salary range represents a general guideline; however, Northrop Grumman considers a number of factors when determining base salary offers such as the scope and responsibilities of the position and the candidate's experience, education, skills and current market conditions.Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay. Annual bonuses are designed to reward individual contributions as well as allow employees to share in company results. Employees in Vice President or Director positions may be eligible for Long Term Incentives. In addition, Northrop Grumman provides a variety of benefits including health insurance coverage, life and disability insurance, savings plan, Company paid holidays and paid time off (PTO) for vacation and/or personal business.The application period for the job is estimated to be 20 days from the job posting date. However, this timeline may be shortened or extended depending on business needs and the availability of qualified candidates.Northrop Grumman is an Equal Opportunity Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. For our complete EEO and pay transparency statement, please visit http://www.northropgrumman.com/EEO. U.S. Citizenship is required for all positions with a government clearance and certain other restricted positions.