Sr. Principal Network Administrator

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. The Northrop Grumman Classified Solutions team is seeking a highly experienced Senior Network Administrator to join its dynamic team of technical professionals. This position will be located in Linthicum, MD; please note that the selected candidate will be required to work on-site, full-time, at our Linthicum, MD campus; this is not a remote work opportunity. Responsibilities will included but not be limited to the following: Maintain smooth operation of LAN/WAN/VPNs. 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 interfacing, including routers, multiplexers, firewalls, switches, gateways, etc. 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. Provide regular monitoring and network analysis, regarding short and long-range planning for [in-house] systems; coordinate third-party maintenance for network equipment. Design networks or portions of networks, including the selection of hardware and software packages. 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 and 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. Exercise 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 while meeting SLA requirements.