Principal Network Engineer

RELOCATION ASSISTANCE: No relocation assistance availableCLEARANCE TYPE: SecretTRAVEL: Yes, 10% of the Time 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 is a global leader in aerospace, defense, and cyber-technology, delivering innovative systems and solutions in unmanned platforms, C4ISR, cybersecurity, logistics, and modernization to government and commercial customers worldwide. Our Enterprise Networks, Communication & Visibility team enables secure, reliable connectivity for more than 200 locations and three regional data centers across the enterprise.
We are seeking a technically skilled Network Engineer to join our Network Communications and Visibility (NCV) team in Sunnyvale, CA. While the primary focus will be on supporting the Sunnyvale campus, the role will also involve enterprise-wide responsibilities across the Northrop Grumman network footprint. The successful candidate will design, implement, and maintain high availability network infrastructure, work directly with customers and vendors, and contribute to continuous improvement of our secure communications environment.
Key Responsibilities:
Design & Implementation

Plan, design, and deploy site and enterprise level network solutions in accordance with Northrop Grumman standards and best practices.

Produce comprehensive design review packages, including schematics, bill-of-materials, and implementation schedules.

Installation & Integration

Install and commission Cisco core network equipment (routers, multilayer switches, firewalls, wireless controllers, and access points).

Coordinate fiber-optic and copper cabling projects with suppliers and internal construction teams.

Operations & Support

Provide Tier-2/3 troubleshooting for WAN, LAN, and SD-WAN environments, ensuring 99.9 % availability of firewalls, routing, and wireless services.

Execute corrective actions, hardware replacements, and software upgrades while maintaining accurate documentation in our configuration management database (CMDB).

Vendor & Customer Interaction

Serve as the primary technical liaison with vendors (Cisco, Aruba, Juniper, etc.) for escalations, service definitions, and new service onboarding.

Work closely with the Sunnyvale sector customer base to translate business requirements into robust technical solutions.

Security & Compliance

Implement and enforce security policies for network segmentation, access control, and vulnerability remediation in line with DoD and NIST guidelines.

Continuous Improvement

Participate in after-action reviews, recommend process enhancements, and mentor junior engineers on best-in-class networking practices.

Basic Qualifications:

Must have at minimum, 5 years of relevant experience with Bachelor's degree OR 3 years of relevant experience with a Masters degree OR 9 years of relevant experience with a High School Diploma.

Must have experience with managed network solutions, and large-scale technical network engineering project experience.

Must have experience with Cisco Router and Switch equipment, Firewall Cisco Network Equipment. Cisco Wireless Technology, Cellular Technology

Must have an active DoD Secret Security Clearance

A strong knowledge of the TCP/IP protocol, Cisco Router and Switch products are a must-have. Cisco and Palo Alto Firewalls a plus.

Knowledge and experience with LAN/WAN protocols and technologies such as multicast, QoS, CoS & OSPF

Must be able to travel 10% of the time

Preferred Qualifications:

Experience with SDWAN methodologies / equipment a plus.

Experience leading enterprise projects for large networks

Experience in designing network solutions

Experience leading network implementation projects

Project management certification

Experience using test equipment such as the Network Associates Sniffer, cable and fiber optics test sets, and other protocol analyzers

Cisco and Palo Alto Firewalls a plus.

* Top Secret clearance is preferred