Senior Principal Computer Operations Analyst - Linux/Windows

RELOCATION ASSISTANCE: No relocation assistance available CLEARANCE REQUIRED FOR START: No CLEARANCE TYPE: 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 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 by 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.   Northrop Grumman's CIDO Space Operations organization is seeking a Senior Principal Computer Operations Analyst - Linux/Windows Systems Administrator with automation experience to provide cross-platform server and systems administration support, to include a high-demand, off-net/enclave production environment running primarily Windows Server and Red Hat Enterprise Linux (RHEL) at our Dulles, VA facility. This is a senior, cross‑platform systems administration role that serves as an escalation point and technical lead for Windows and Linux/RHEL environments. Job responsibilities will include, but are not limited to, the following:

Serve as a senior cross‑platform systems administrator and escalation point for T1–T3 staff across Windows and Linux/RHEL server and client systems in both corporate and offnet/enclave environments. Lead troubleshooting and root‑cause analysis for complex hardware, OS, application, and networking issues; document resolutions and mentor junior team members on best practices. Oversee routine system administration activities (accounts, permissions, storage, backups, performance monitoring), stepping in directly for high‑impact or complex work. Ensure accurate incident, change, and asset records in ServiceNow and help the team meet SLAs and manage customer communications during significant events. Support security compliance and vulnerability management efforts using enterprise tooling (e.g., Tenable, Armis, ArcherGRC) and drive remediation activities to closure. Coordinate with network/firewall teams to identify and request required firewall changes using a solid understanding of TCP/UDP, ports, and IP addressing. Design and implement compliant technical solutions where corporate or centrally provided services are unavailable (particularly in offnet/enclave environments). Provide on‑call/after‑hours support for production‑impacting incidents and planned maintenance, and collaborate with engineering, security, and program teams on IT initiatives. Cross‑Platform (Windows / Linux / RHEL) Responsibilities Administer and support Windows Server and RHEL environments, including core services (e.g., DNS, DHCP, directory services, storage, and patching), acting as the escalation point for complex platform issues. Guide and support imaging, deployment,