Principal Network Engineer

Northrop Grumman Corp.; Sunnyvale (CA); On-site; USD 103,600 - 155,400; Full time

Job summary

Northrop Grumman in Sunnyvale, CA seeks a skilled Network Engineer to design, implement, and maintain high-availability enterprise network infrastructure across campus and enterprise-wide. The role involves direct customer and vendor interaction and focus on secure communications.

Candidates should have DoD Secret clearance, 5+ years with a Bachelor’s or 3 years with a Master’s (or 9+ years with HS), and experience with Cisco routers/switches, firewalls, and SD-WAN; travel up to 10% and strong

Qualifications

• Requires 5+ years of relevant experience with a Bachelor’s degree OR 3 years with a Master’s degree OR 9 years with a High School Diploma.
• Experience with managed network solutions and large-scale technical network engineering projects.
• Experience with Cisco Router and Switch equipment; Cisco Firewalls; Wireless technologies.

Responsibilities

• Design, implement, and maintain site and enterprise level network solutions.
• Install and commission Cisco core network equipment and coordinate cabling projects.
• Provide Tier-2/3 troubleshooting for WAN, LAN, and SD-WAN environments; ensure 99.9% availability.

Skills

Network engineering

Troubleshooting

Customer collaboration

Project coordination

Education

Bachelor's degree

Master's degree

High School Diploma with experience

Tools

Cisco equipment

Firewalls

Palo Alto Firewalls

Job description

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

Primary Level Salary Range: $103,600.00 - $155,400.00The 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.