Sr. Principal Network Engineer - Top Secret

Company: Northrop Grumman
Location: Redondo Beach
Posted on: April 1, 2026

Job Description:

RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE TYPE: Top Secret TRAVEL: 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. At the heart of Defining Possible is our commitment to missions. In rapidly changing global security environments, Northrop Grumman brings informed insights and software-secure technology to enable strategic planning. We’re looking for innovators, who can help us keep building on our wide portfolio of secure, affordable, integrated, and multi-domain systems and technologies that fuel those missions. By joining in our shared mission, we will support yours of expanding your personal network and developing skills, whether you are new to the field or an industry thought-leader. At Northrop Grumman, you will have the resources, support, and team to do some of the best work of your career. Networking Technology Professionals, We Want You! The Northrop Grumman Classified Solutions team is seeking a highly experienced Senior Network Administrator to join its dynamic team of technical professionals. The qualified applicant will become part of Northrop Grumman’s Classified Solutions support team and can support the organization in Redondo Beach , CA . Note: Due to the classified nature of the work being performed, this position does not offer any virtual or telecommute working options. Applicants are encouraged to apply, only if they are willing to work on-site. Responsibilities will include but not be limited to the following: Maintain smooth operation of classified networks - LAN/WAN environments. Plan, design, configure, and install network hardware in support of customer requirements. Maintain technical expertise in all areas of networks and computer hardware / software interconnection, as well as interfaces, including routers, multiplexers, firewalls, switches, gateways, etc. Propose solutions to management to ensure all communications requirements are based on future needs and current usage, configuring such solutions to optimize cost savings . Ensure all communication requirements (based on future needs and current usage) are configured to optimize cost savings. Create and ensure that appropriate network documentation exists, including operational instructions. Install, configure and Cisco routers, switches, and Palo Alto firewalls. Install, configure and maintain Cisco Call Manager voip systems. Provide regular monitoring, and network analysis, regarding short and long-range planning for [in-house] systems. May coordinate third-party maintenance for network equipment. Design networks, or portions of networks, including the selection of hardware and software packages. Provide incident and service request support in accordance with enterprise SLAs. May coordinate third-party maintenance for network equipment. Represent the organization in providing solutions to difficult technical issues associated with specific projects. The successful applicant will demonstrate the ability to work in a team environment with engineering users, other network administrators, systems administrators, and computer/facility organizations. The ability to multi-task and good communication skills, both verbal and written, are required. Additional duties will include (but not limited to): Plan, manage and implement complex network designs in support of customer requirements. Develop technical solutions to complex problems which require the regular use of ingenuity and creativity. Support network teams in project designs to clarify project requirements, provide design solutions, in accordance with standards. Perform troubleshooting analysis of network infrastructure and associated systems. Document network hardware and software technology components. Install and configure routers, switches and firewalls. (Cisco/Palo Alto) Implement and troubleshoot LAN technologies such as VLANs, trunking (port tagging), spanning-tree and protocols. Provide third-level support and troubleshooting of network problems. On occasion may provide after-hours and weekend support. Work is performed without appreciable direction. Exercises considerable latitude in determining technical objectives of assignment. Completed work is reviewed from a relatively long- term perspective, for desired results. Implement and troubleshoot WAN technologies such as EIGRP, BGP, OSPF, and telco circuits (T1, T3, OC3) Interface regularly with customers and manage customer installation timelines and deliverables to help facilitate successful deployments. Manage timely resolution of all critical and/or complex problems meeting SLA requirements Experience with HAIPE/TACLANE and other military COMSEC/CRYPTO equipment and procedures. Experience in the use of network analysis tools (i.e. WireShark, SolarWinds, Opnet, etc.) Experience with Microsoft Office, Visio, Project, PowerPoint and Excel is required Lift equipment weighing up to 40 pounds as needed Ability to work after hours, and weekends as needed Basic Qualifications: Master's Degree with 6 years of experience; OR a Bachelor's Degree with 8 years of experience; OR an Associate's Degree with 10 years of experience; OR a High School Diploma (or equivalent) with 12 years of IT experience is required Must have a DOD 8570 IAT level 2 baseline certification (example: Security CE) Candidates must have a current and fully adjudicated DOD Top Secret level security clearance (at a minimum) in order to be considered Candidates must have the ability to obtain, and maintain, a Top Secret/SCI level security clearance as a condition of employment Candidates must have the ability to obtain, and maintain, access to Special Programs as a condition of employment Experience designing and maintaining LAN & WAN based networks, managing routing protocols on large LAN environments, and experience with Cisco hardware (routers, switches, and firewalls) Preferred Qualifications: Bachelor’s degree Network Engineering Active Top Secret/SCI, Polygraph, or SAP/SAR access would be nice to have Network certification and/or either a CCNP or a CCIE certification Network design, analysis, and administration of routers, switches, hubs, and firewalls Experience in the use of network analysis tools (i.e. WireShark, SolarWinds, Opnet, etc.) would be nice to have Experience with configuring TACLANES would be ideal Previous experience troubleshooting network procedures and best practices; experience with network challenges associated with systems integration, including COTS integration, capacity analysis and system architecture design Demonstrated leadership skills, or previous management of small teams, would be helpful We offer flexible work arrangements, phenomenal learning opportunities, exposure to a wide variety of projects and customers, and a very friendly team environment. Our Employee Resource Groups (ERGs) offer opportunities to be a friend, be active, be a volunteer, be a leader, be recognized, and to be yourself. At Northrop Grumman, we are on the cutting edge of innovation. Our diverse portfolio of programs means there are endless paths to cultivate your career. We also offer exceptional benefits/healthcare, a 9/80 work schedule, and a great 401k matching program. Come join us! Primary Level Salary Range: $120,900.00 - $181,300.00 The 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.

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