Systems Administrator - Principle

Job Description
We are seeking an experienced Systems Administrator to lead a team of system administrators in managing and maintaining critical infrastructure. The ideal candidate will possess a deep technical understanding of enterprise systems administration and a proven track record of operating within air-gapped (disconnected) networks. This role requires a disciplined approach to security, a commitment to rigorous compliance standards, and the ability to execute complex system updates and troubleshooting without external internet connectivity.
In this System Administrator position you will make impacts in the following ways:

• Administer patch management for RHEL-based Linux and Windows systems, including vulnerability scanning, patch deployment, and compliance validation
• Perform VMware patching and lifecycle operations
• Perform Server and Exchange operations in an isolated environment
• Manage and maintain TrueNAS storage systems, including volumes, snapshots, and secure protocols
• Operate in VMware vSphere environments, including provisioning, performance monitoring, and resource management
• Install, configure, and maintain WSUS (Windows Server Update Services) for enterprise Windows patching
• Maintain comprehensive documentation and contribute to RMF packages and audit readiness.
• Configure/troubleshoot group policies
• Build workstations to specification based on requirements
• Information systems IAVM/STIG compliance
• Install and configure COTS and GOTS software

Required Education, Experience, & Skills

• 10+ years of experience (7+ years of experience with a degree) as a system administrator
• CompTIA Security+ or equivalent DoD 8570 IAT Level II certification
• Proven ability to configure and manage WSUS for Windows update distribution
• Hands-on knowledge of Microsoft Exchange administration
• Strong Active Directory experience, including domain controller and GPO management
• Experience with VMware infrastructure, including vCenter, VCSA, and ESXi
• Experience with Linux (Red Hat)
• Experience with networking equipment such as Cisco Switching, Aruba VPNs, and Firewalls
• Demonstrate experience with managing enterprise Certificate Authorities (CA) such as Microsoft Active Directory Certificate Service (AD CS)

Preferred Education, Experience, & Skills

• Familiarity with DISA STIGs, Nessus vulnerability scanning, and cyber compliance frameworks
• Strong understanding of PKI lifecycle management, including issuance, revocation, renewal and chain-of-trust validation
• Experience with TrueNAS storage technologies
• Scripting skills (e.g., Bash, PowerShell) for automation and task efficiency
• Backup/Redundancy Management
• Familiarity with Fortify administration
• Experience working with SecureView
• Operating System Certification

Pay Information
Full-Time Salary Range: $107359 - $182510
Please note: This range is based on our market pay structures. However, individual salaries are determined by a variety of factors including, but not limited to: business considerations, local market conditions, and internal equity, as well as candidate qualifications, such as skills, education, and experience.
Employee Benefits: At BAE Systems, we support our employees in all aspects of their life, including their health and financial well-being. Regular employees scheduled to work 20+ hours per week are offered: health, dental, and vision insurance; health savings accounts; a 401(k) savings plan; disability coverage; and life and accident insurance. We also have an employee assistance program, a legal plan, and other perks including discounts on things like home, auto, and pet insurance. Our leave programs include paid time off, paid holidays, as well as other types of leave, including paid parental, military, bereavement, and any applicable federal and state sick leave. Employees may participate in the company recognition program to receive monetary or non-monetary recognition awards. Other incentives may be available based on position level and/or job specifics.
About BAE Systems Intelligence & Security
BAE Systems, Inc. is the U.S. subsidiary of BAE Systems plc, an international defense, aerospace and security company which delivers a full range of products and services for air, land and naval forces, as well as advanced electronics, security, information technology solutions and customer support services. Improving the future and protecting lives is an ambitious mission, but it's what we do at BAE Systems. Working here means using your passion and ingenuity where it counts - defending national security with breakthrough technology, superior products, and intelligence solutions. As you develop the latest technology and defend national security, you will continually hone your skills on a team-making a big impact on a global scale. At BAE Systems, you'll find a rewarding career that truly makes a difference.
Intelligence & Security (I&S), based in McLean, Virginia, designs and delivers advanced defense, intelligence, and security solutions that support the important missions of our customers. Our pride and dedication shows in everything we do-from intelligence analysis, cyber operations and IT expertise to systems development, systems integration, and operations and maintenance services. Knowing that our work enables the U.S. military and government to recognize, manage and defeat threats inspires us to push ourselves and our technologies to new levels.
This position will be posted for at least 5 calendar days. The posting will remain active until the position is filled, or a qualified pool of candidates is identified.