Network Administrator 3/4 - TS/SCI

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

Job Description:

RELOCATION ASSISTANCE: No relocation assistance available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: SCI 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 secure technological solutions to enable strategic objectives. 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 an experienced Network Administrator to join its dynamic team of technical professionals. The qualified applicant will become part of Northrop Grumman’s Space Systems sector under the Chief Information & Digital Office (CIDO) organization. Note- The selected candidate will be required to work on-site, full-time, at our facility/campus. This is not a virtual position. The Network Administrator maintains smooth operation of LAN/WAN/VPNs. Plans, designs, configures, and installs network hardware in support of customer requirements. Maintains technical expertise in all areas of networks and computer hardware / software interconnection, as well a interfacing, including routers, multiplexers, firewalls, switches, gateways, etc. Proposes solutions to management. Ensures all communication requirements (based on future needs and current usage) are configured to optimize cost savings. Creates and ensures that appropriate network documentation exists, including operational instructions. Provides regular monitoring, and network analysis, regarding short and long-range planning for [in-house] systems. May coordinate third-party maintenance for network equipment. Designs networks, or portions of networks, including the selection of hardware and software packages. Additional duties: 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 Cisco routers, switches and firewalls. Implement and troubleshoot LAN technologies such as VLANs, trunking (port tagging), spanning-tree and protocols. Provide third-level support and troubleshooting of network problems. Periodically 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 Microsoft Office, Visio, Project, PowerPoint and Excel If you are ready to solve complex problems in a dynamic environment, apply today! This position can be filled at either level 3 (Principal), or level 4 (Sr. Principal), based on the below qualifications. Basic Qualifications for level 3: Master's Degree with 3 years of relevant IT experience; OR a Bachelor's Degree with 5 years of relevant IT experience; OR an Associate's Degree with 7 years of relevant IT experience; OR a High School Diploma/GED with 9 years of relevant IT experience is required Must have work experience with designing and maintaining LAN/WAN based networks, managing routing protocols on large LAN environments, and experience with Cisco hardware (routers, switches, and firewalls) Must have a DOD 8570 IAT level II baseline certification (example: Security CE) Ability to lift equipment weighing up to 40 pounds Ability to work after hours, and weekends, as needed Candidates must have a current DOD Top Secret level security clearance with SCI access level eligibility (at a minimum) in order to be considered Candidates must have the ability to obtain, and maintain, a Polygraph as a condition of continued employment Basic Qualifications for level 4: Master's Degree with 6 years of relevant IT experience; OR a Bachelor's Degree with 8 years of relevant IT experience; OR an Associate's Degree with 10 years of relevant IT experience; OR a High School Diploma/GED with 12 years of relevant IT experience is required Must have work experience with designing and maintaining LAN/WAN based networks, managing routing protocols on large LAN environments, and experience with Cisco hardware (routers, switches, and firewalls) Must have a DOD 8570 IAT level II baseline certification (example: Security CE) Ability to lift equipment weighing up to 40 pounds Ability to work after hours, and weekends, as needed Candidates must have a current DOD Top Secret level security clearance with SCI access level eligibility (at a minimum) in order to be considered Candidates must have the ability to obtain, and maintain, a Polygraph as a condition of continued employment Preferred Qualifications: The ideal candidate will have a Bachelor’s degree Network Engineering, Security CE, a Cisco CCNA (or a CCNP), and 6 years of 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 Active TS/SCI with a current/recent Polygraph would be ideal 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: $103,600.00 - $155,400.00 Secondary Level Salary Range: $129,300.00 - $193,900.00 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.

Keywords: Northrop Grumman, Arcadia , Network Administrator 3/4 - TS/SCI, IT / Software / Systems , Redondo Beach, California