Principal​/Sr Principal Infrastructure Engineer

RELOCATION ASSISTANCE:
Relocation assistance may be available

CLEARANCE REQUIRED FOR START:
Yes

CLEARANCE TYPE:
Top Secret

TRAVEL:
Yes, 10% of the Time

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.

• Own the deployment, operation, maintenance, and lifecycle management of production infrastructure and shared platform services across Windows, Linux, network, and virtualized environments.
• Work as part of an integrated infrastructure team, collaborating with fellow engineers, ISSOs, and ISSEs to translate operational and security requirements into maintainable solutions and resolve vulnerabilities, configuration findings, and production issues.
• Administer Microsoft Active Directory, Group Policy, DNS, RADIUS, and other core identity and network services supporting production systems.
• Deploy, configure, patch, harden, monitor, and troubleshoot Windows and Linux servers in accordance with organizational security, availability, and performance requirements.
• Administer VMware ESXi/vSphere environments, including virtual machines, storage, networking, capacity planning, availability, upgrades, and lifecycle management.
• Configure, maintain, and troubleshoot Cisco network infrastructure, including switching, routing, VLANs, segmentation, access controls, and connectivity between systems and services.
• Develop and maintain Ansible playbooks, scripts, and reusable automation to standardize provisioning, configuration management, system administration, and other recurring tasks.
• Apply Infrastructure-as-Code and Git Ops practices using version control, peer review, automated validation, configuration baselines, and controlled deployment of infrastructure changes.
• Implement and maintain monitoring, logging, alerting, backup, recovery, and operational health capabilities for production infrastructure services.
• Troubleshoot complex infrastructure issues across compute, virtualization, networking, storage, authentication, and application dependencies, including root-cause analysis and corrective action.
• Maintain infrastructure architecture, configuration standards, runbooks, and as-built documentation while driving automation, modernization, reliability, security, and reduction of technical debt.

• Principal: 5 Years with Bachelors in Science; 3 Years with Masters; 1 Year with PhD. 4 year additional experience may be considered in lieu of a degree.
• Sr Principal: 8 Years with Bachelors in Science; 6 Years with Masters; 4 Years with PhD. 4 year additional experience may be considered in lieu of a degree.
• Must have U.S. Citizenship with an active Top Secret security clearance with an active SCI indoctrination at the time of application.
• Hands-on experience administering Windows Server environments and Microsoft Active Directory, including users and groups, Group Policy, domain services, permissions, authentication, and DNS.
• Experience deploying, configuring, patching, maintaining, and troubleshooting Windows and/or Linux servers in production or operational environments.
• Hands-on experience with TCP/IP networking, including DNS, VLANs, routing, switching, firewalls, and troubleshooting network connectivity issues.
• Experience administering virtualized infrastructure using VMware vSphere/ESXi or a comparable enterprise virtualization platform.
• Experience using automation, scripting, or configuration-management technologies such as Ansible, Power Shell, Python, Bash, or similar tools.
• Demonstrated ability to troubleshoot complex infrastructure issues spanning operating systems, applications, identity services, networking, and virtualization; perform root-cause analysis; and drive technical problems through resolution.
• Ability to create and maintain clear technical documentation,…