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BAE Systems, Inc. · 18 hours ago

Systems Administrator, Linux/Windows

Nashua, NH

Full-time

Onsite

Mid, Senior Level

$97K/yr - $165K/yr

5+ years exp

BAE Systems, Inc. is a leading defense, aerospace, and security company dedicated to protecting lives and improving the future. They are seeking a Senior Closed Area Systems Administrator to provide technical and operational support for classified IT systems, ensuring secure and compliant system operations in a closed, classified environment.

Defense & Space

No H1B

Security Clearance Required

U.S. Citizen Only

Responsibilities

Administer patch management for RHEL-based Linux systems, including vulnerability scanning, patch deployment, and compliance validation

Install and configure Trellix (McAfee) Linux Agents for endpoint protection and ePO integration

Deploy and configure Splunk Universal Forwarders on Linux systems; manage log ingestion and index routing

Configure, deploy, and maintain Lab-in-a-Box (LIB) environments used in closed area testing and mission scenarios

Develop and execute system shutdown and secure wipe procedures, in accordance with DoD and agency guidelines

Lead and coordinate data spill containment, response, and remediation actions in classified environments

Reset LDAP BIND credentials within Splunk, ensuring connectivity and access control integration

Perform VCSA (vCenter Server Appliance) patching and lifecycle operations

Apply updates to VMware ESXi hosts, ensuring host profile compliance and uptime

Access and navigate the ESXi Direct Console User Interface (DCUI) for low-level host management

Perform Exchange operations in a classified environment including user mailbox creation, troubleshooting, and routine maintenance

Manage and maintain NetApp 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

Collaborate with ISSOs, security staff, and other IT stakeholders to ensure secure, compliant, and high-performing system operations

Qualification

Linux Systems AdministrationWindows Systems AdministrationVMware InfrastructureSplunk ManagementNetApp ManagementPatch ManagementSecurity ClearanceScripting SkillsSoft Skills

Required

US Citizenship as required by contract

Active U.S. Secret Security Clearance and CompTIA Security+ or equivalent DoD 8570 IAT Level II certification

5-7 years of related system administrator experience with a high school diploma.(4+ years of experience with a Bachelors degree) as a system administrator

Strong command of Linux RHEL patching workflows and package management tools (e.g., YUM/DNF)

Experience with Trellix/McAfee agent installation on Linux systems and ePO integration

Hands-on expertise with Splunk Universal Forwarders, indexers, and LDAP integration

Experience with VMware infrastructure, including vCenter, VCSA, ESXi, and DCUI access

Working knowledge of Microsoft Exchange administration

Familiarity with NetApp management tools and SAN/NAS storage concepts

Solid experience operating within vSphere environments in mission-critical settings

Proven ability to configure and manage WSUS for Windows update distribution